Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| acknow | (Obs.) to recognize, acknowledge. |
| advertent | attentive, heedful. |
| advertently | (Adv.) ADVERTENT, attentive, heedful. |
| agnise | (Arch.) to acknowledge, confess. |
| agnize | (Arch.) to acknowledge or confess. |
| agnoiology | the science or study of ignorance. |
| apperceive | to perceive an inner meaning. |
| apprehend | to understand. |
| attuition | a mental operation intermediate between sensation and perception. |
| attuitional | relating to attuition. |
| beknown | (Arch.) known. |
| believe | to accept as true or real. |
| believer | one that believes. |
| believingly | (Adv.) BELIEVING. |
| bethink | to call to mind. |
| brainchild | a product of one's creative imagination. |
| brainfart | an idea expressed without much previous thought. |
| brainstorm | a sudden disturbance of the mind; a sudden inspiration; (verb) to conduct a thinking session. |
| brainwave | a sudden good idea. |
| brood | offspring, children, or family (verb) to ponder gloomily |
| broodily | (Adv.) BROODY, tending to brood. |
| broody | tending to brood. |
| cann | to direct the steering of. |
| cerebrate | to engage in intellectual activity. |
| coconscious | aware of the same things, or various things within the same consciousness; (noun) mental processes in a subsidiary stream, apart from the main stream of consciousness. |
| coconsciousness | the state of being coconscious. |
| cogitable | capable of being thought, conceivable. |
| cogitate | to engage in continuous thought. |
| cogitatingly | (Adv.) COGITATING, engaging in continuous thought. |
| cogitation | the act of cogitating. |
| cogitative | having the power of thinking; given to cogitating. |
| cogitatively | (Adv.) COGITATIVE. |
| cogitativeness | the state of being cogitative. |
| cogitator | one who cogitates. |
| cognisable | that can be cognised. |
| cognisably | (Adv.) COGNISABLE, that can be cognised. |
| cognisance | knowledge or notice, judicial or private. |
| cognisant | aware, conscious of. |
| cognise | to become conscious of. |
| cogniser | one who cognises. |
| cognition | the process of knowing, including sensation, perception, etc, distinguished from emotion and conation. |
| cognitional | relating to cognition. |
| cognitive | capable of, or pertaining to, cognition. |
| cognitively | (Adv.) COGNITIVE, capable of, or pertaining to, cognition. |
| cognitivity | the state of being cognitive. |
| cognizable | that can be cognized. |
| cognizably | (Adv.) COGNIZABLE, capable of being known or apprehended. |
| cognizance | knowledge or notice, judicial or private. |
| cognizant | having cognizance or knowledge. |
| cognize | to become conscious of. |
| cognizer | one who cognizes. |
| cognoscible | cognizable, knowable. |
| comprehend | to grasp the meaning of. |
| con | a trick or swindle; (verb) to trick, or persuade by dishonest means (verb, obs.) to know, study |
| conceit | a fanciful idea (verb) to form a conception of |
| conceitful | (Spenser) thoughtful. |
| conceive | to understand. |
| conceiver | one who conceives. |
| concept | a general idea. |
| conceptualizer | one who conceptualizes. |
| conjectural | of the nature of or involving or based on conjecture. |
| conjecturally | (Adv.) CONJECTURAL, of the nature of or involving or based on conjecture. |
| conjecture | to arrive at or deduce by conjecture. |
| conjecturer | one who conjectures. |
| conne | (Spenser) to know. |
| connotive | signifying or suggesting ideas. |
| connotively | (Adv.) CONNOTIVE. |
| conscient | conscious. |
| consciousness | the state of being conscious. |
| consider | to think about. |
| considerer | one who considers. |
| considering | in view of; seeing that. |
| consideringly | with consideration. |
| contemplant | one who contemplates. |
| contemplate | to view or consider with continued attention. |
| contemplative | related to contemplation (noun) a person who practices contemplation |
| contemplatively | (Adv.) CONTEMPLATIVE, related to contemplation. |
| conversant | having knowledge or experience. |
| deductive | of thought or reasoning, concerned with deduction from premises or accepted principles. |
| deductively | (Adv.) DEDUCTIVE, (of thought or reasoning) concerned with deduction from premises or accepted principles. |
| deem | to hold as an opinion. |
| deliberate | intentional (verb) to think about or discuss issues and decisions carefully |
| deliberately | (Adv.) DELIBERATE, intentional. |
| devise | to form in the mind. |
| dianoetic | capable of or relating to thought. |
| disbelief | lack of belief. |
| discursus | (Lat.) argumentation; ratiocination; discursive reasoning. |
| disinformation | deliberate leakage of misleading information. |
| dunno | (Coll.) don't know. |
| elucubrate | to work out or express by studious effort; to burn the midnight oil. |
| envisage | to form a mental image of. |
| epistemic | (Greek) relating to knowledge or the act of knowing. |
| epistemically | (Adv.) EPISTEMIC, relating to knowledge or act of knowing. |
| excogitate | to discover by thinking out or reasoning. |
| excogitation | the act of excogitating. |
| excogitative | relating to excogitation. |
| excogitator | one who excogitates. |
| faith | belief; (verb, Shakesp.) to believe. |
| fantasise | to visualize in fantasy. |
| fantasize | to visualize in fantasy. |
| fantasy | fancy, imagination; (verb) to imagine. |
| foreknow | to know beforehand. |
| foreknowable | that can be known in advance. |
| foreknowingly | (Adv.) FOREKNOWING. |
| foreknowledge | knowledge in advance of the event. |
| forethink | to think beforehand. |
| forethinker | one who forethinks. |
| forethought | a thinking or planning out in advance. |
| forethoughtful | full of forethought. |
| forthink | to repent; to regret. |
| gen | (Coll.) general information; (verb) to gain information. |
| gesse | (Spenser) to guess. |
| ghesse | (Spenser) to guess. |
| grok | (Coll.) to understand thoroughly and intuitively. |
| guess | a judgement made or opinion formed without sufficient evidence or grounds; (verb) to form an opinion from little or no evidence. |
| guessable | that can be guessed. |
| guesser | one who guesses. |
| guessingly | (Adv.) GUESSING. |
| guesstimate | to estimate without adequate information. |
| guesswork | the process or result of guessing. |
| guestimate | to make an intuitive estimate. |
| hypothesiser | one who hypothesises. |
| hypothesizer | one who hypothesizes. |
| idea | a conception existing in the mind. |
| ideaed | provided with ideas. |
| idealess | destitute of an idea. |
| ideate | to form an idea or conception of. |
| ideation | the power of the mind to form images. |
| idee | (Fr.) an idea. |
| ignorance | lack of knowledge. |
| imaginal | characterized by imagination; imaginative. |
| imagination | the act of imagining. |
| imagine | to form a mental picture of. |
| imaginer | one who imagines. |
| impart | to make known. |
| imperseverant | lacking the power to perceive. |
| incogitability | the quality of being incogitable, unthinkable. |
| incogitable | unthinkable. |
| incogitancy | the state of being incogitant, thoughtless. |
| incogitant | thoughtless; inconsiderate. |
| incognisant | unaware. |
| info | (Short for) information. |
| inform | to supply with information. |
| informedly | (Adv.) INFORMED. |
| informingly | (Adv.) INFORMING. |
| inopinate | (Obs.) not thought of; unexpected. |
| inscience | want of knowledge; ignorance. |
| inscient | (Arch.) having little or no knowledge. |
| insight | a perception of the inner nature of things. |
| intellect | the mind, in reference to its rational powers. |
| intellection | an exercise of the intellect. |
| intuit | to know intuitively. |
| intuitable | that can be intuited. |
| intuition | the power of the mind by which it immediately perceives the truth of things without reasoning or analysis. |
| intuitional | relating to an intuition. |
| intuitionally | (Adv.) INTUITIONAL, relating to an intuition. |
| intuitive | possessing intuition. |
| inwit | (Arch.) inward sense; mind. |
| jalouse | (Scots) to suspect or surmise. |
| jealouse | (Scots) to suspect or surmise. |
| ken | knowledge; (verb) to know. |
| kenner | one who kens, knows. |
| kithe | (Arch.) to make known. |
| know | to have a true understanding of. |
| knowable | able to be known. |
| knowableness | the state of being knowable. |
| knower | one who knows. |
| knowhow | the faculty of knowing what to do. |
| knowing | knowledge (adj.) crafty |
| knowingly | (Adv.) KNOWING. |
| knowingness | the state of being knowing. |
| knowledgable | possessing knowledge. |
| knowledgably | (Adv.) KNOWLEDGABLE, possessing knowledge. |
| knowledge | what is known; (verb, obs.) to acknowledge. |
| knowledgeable | possessing knowledge. |
| kon | (Spenser) to know. |
| kydst | (Spenser) (thou) knows. |
| kythe | (Arch.) to make known. |
| lowdown | the real information about something. |
| lucubration | laborious or intensive study. |
| meditate | to ponder. |
| meditation | a discourse intended to express its author's reflections or to guide others in contemplation. |
| meditative | marked by or conducive to meditation. |
| meditatively | (Adv.) MEDITATIVE, marked by or conducive to meditation. |
| meditator | one who meditates. |
| memorise | to commit to memory. |
| memoriser | one who memorises. |
| memoriter | (Lat.) from memory; by heart. |
| memorizable | able to be memorised. |
| memorize | to commit to memory. |
| memorizer | one who memorizes. |
| memory | the mental faculty of retaining and recalling past experience. |
| mentalese | the picturing of concepts in the mind without words. |
| mentality | mind, a way of thinking. |
| mentation | thought, cogitation. |
| meseemed | (Arch.) it seemed to me. |
| meseemeth | (Arch.) it seems to me. |
| meseems | (Arch.) it seems to me. |
| metacognition | thinking about one's own mental processes. |
| methink | (Arch.) I think. |
| methinketh | (Obs.) I think. |
| methinks | (Arch.) I think. |
| mind | intellect; that which thinks, knows, feels, and wills; (verb) to heed. |
| mindful | heedful. |
| mindfully | (Adv.) MINDFUL, heedful. |
| mindfulness | the state of being mindful. |
| mindscape | the range of a person's thoughts and imagination, regarded as a panorama. |
| mindset | the ideas and attitudes with which a person approaches a situation, esp when these are seen as being difficult to alter. |
| misconster | (Obs.) to misconstrue. |
| misken | not to know. |
| misknowledge | erroneous knowledge. |
| misthink | to think wrongly. |
| misthought | a wrong thought. |
| mnemonic | relating to memory (noun) a device to assist the memory |
| mnemonical | assisting in memory. |
| mnemonically | (Adv.) MNEMONICAL, assisting in memory. |
| moniment | (Obs.) something to preserve memory; a reminder; a monument. |
| multiscience | knowledge of many things. |
| muse | to ponder. |
| museful | meditative; thoughtfully silent. |
| musefully | (Adv.) MUSEFUL, meditative. |
| muser | one who muses. |
| musingly | (Adv.) MUSING, reflective. |
| nescience | lack of knowledge or awareness; the doctrine that nothing is truly knowable. |
| nescient | lacking or disclaiming knowledge; (noun) one who lacks knowledge. |
| noematical | of or pertaining to the understanding. |
| noematically | (Adv.) NOEMATICAL, of or pertaining to the understanding. |
| noesis | (Greek) intellectual activity; purely intellectual perception. |
| noetic | of or relating to the mind or intellect. |
| nonthinking | not thinking; (noun) an act of not thinking or choosing not to think, an absence of thought. |
| notion | a concept in the mind of the various marks or qualities of an object. |
| notional | of the nature of a notion. |
| notionally | (Adv.) NOTIONAL, of the nature of a notion. |
| omniscience | the state of being omniscient. |
| omniscient | knowing everything. |
| omnisciently | (Adv.) OMNISCIENT, knowing everything. |
| opinable | capable of being thought. |
| opine | to hold or state as an opinion. |
| opinion | a conclusion or judgment one holds to be true. |
| outthink | to surpass in thinking. |
| overthink | to think to excess. |
| pensee | (Fr.) a thought. |
| pensive | engaged in deep thought. |
| pensively | (Adv.) PENSIVE, thoughtful. |
| pensiveness | the state of being pensive. |
| percept | that which is perceived. |
| perpend | to weigh in the mind; to consider carefully. |
| phantasy | fancy, imagination; (verb) to imagine. |
| ponder | to consider something deeply and thoroughly. |
| ponderate | to consider; to ponder. |
| ponderer | one who ponders. |
| ponderingly | (Adv.) PONDERING. |
| precognise | to know beforehand. |
| precognize | to know beforehand. |
| precognosce | to take a precognition of. |
| preconceit | (Obs.) a preconceived notion; (verb) to preconceive; to form a preconceit or preconception. |
| preconceive | to form (as an opinion) prior to actual knowledge or experience. |
| prescience | knowledge of events before they take place. |
| prescient | having foresight or knowledge of what will happen. |
| presciently | (Adv.) PRESCIENT, having foresight or knowledge of what will happen. |
| prescious | prescient. |
| ratiocinate | to reason or argue logically. |
| ratiocination | the process of exact thinking, reasoning. |
| ratiocinative | relating to ratiocination, the process of exact thinking. |
| ratiocinator | one who ratiocinates, reasons or argues logically. |
| ratiocinatory | relating to ratiocination, the process of exact thinking. |
| realise | to understand. |
| reasoner | one who reasons. |
| recognise | to identify as known or experienced before. |
| recognize | to identify as known or experienced before. |
| reconsider | to consider again esp with a view to changing or reversing. |
| remember | to bring to mind again. |
| remindful | tending to remind. |
| reremind | to remind again. |
| rethink | to think again. |
| rethinker | one who rethinks. |
| rethinking | the act of thinking again. |
| retrocognition | extrasensory knowledge of past events. |
| rote | using mechanical memory, repetition or performance without regard to the meaning > ROTELY; (verb) to fix by rote. |
| ruminator | one who ruminates. |
| sabe | to know, to understand. |
| savey | commonsense; (verb) to know, to understand. |
| savvey | (Coll.) commonsense; (verb) to know, to understand. |
| savvily | (Adv.) SAVVY, shrewd. |
| savvy | shrewd, knowing (noun) commonsense; (verb) to know, to understand |
| scienced | (Arch.) versed, learned. |
| scienter | deliberately, knowingly. |
| sciolous | knowing superficially or imperfectly. |
| scrutable | discoverable by scrutiny, inquiry, or critical examination. |
| secern | to discriminate or distinguish. |
| sensibilia | (Lat.) whatever may be perceived by the senses. |
| sepad | to suppose, uphold. |
| sovenance | (Arch.) remembrance; memory. |
| speculate | to make conjectures or guesses. |
| studiedly | (Adv.) STUDIED, in a deliberate manner. |
| study | a room devoted to study; (verb) to apply the mind to the acquisition of knowledge. |
| subidea | an inferior idea. |
| suppose | to assume to be true. |
| supposedly | (Adv.) SUPPOSED. |
| supposer | one who supposes. |
| supposition | something that is supposed. |
| suppositiously | (Adv.) SUPPOSITIOUS, conjectural; hypothetical. |
| surmisal | the act of surmising. |
| surmise | a conjecture; (verb) to infer with little evidence. |
| surmiser | one who surmises. |
| telepath | one who claims to be able to read other minds; (verb) to read minds. |
| telepathic | related to telepathy. |
| telepathically | (Adv.) TELEPATHIC. |
| telepathy | mind-reading. |
| tenet | (Lat.) a principle, belief, or doctrine generally held to be true. |
| theoric | (Shakesp.) theory, speculation. |
| theorique | (Shakesp.) theory, speculation. |
| think | to formulate in the mind (noun) a spell of thinking, a thought. |
| thinkable | capable of being thought. |
| thinkableness | the state of being thinkable. |
| thinkably | (Adv.) THINKABLE, capable of being thought. |
| thinker | one that thinks. |
| thinking | an opinion or judgment. |
| thinkingly | (Adv.) THINKING. |
| thinkingness | the state of being thinking. |
| thoughtcast | a mode of thought. |
| thoughted | having thoughts. |
| thoughten | (Shakesp.) firm in belief, assured. |
| thoughtful | absorbed in thought. |
| thoughtfully | (Adv.) THOUGHTFUL, absorbed in thought. |
| thoughtfulness | the state of being thoughtful. |
| thoughtless | insufficiently alert. |
| thoughtlessly | (Adv.) THOUGHTLESS, insufficiently alert. |
| thoughtlessness | the state of being thoughtless. |
| thoughtway | a way of thinking that is characteristic of a particular group or culture. |
| trow | a kind of small barge; a troll; (verb, arch.) to believe. |
| unacquaint | to deprive (a person) of awareness or acquaintance. |
| unbeknown | unknown; (adv.) without the knowledge of, unobserved by. |
| unbeknownst | unknown; (adv.) without the knowledge of, unobserved by. |
| unbelief | lack of belief. |
| understand | to grasp the meaning of. |
| understandable | capable of being understood. |
| understandably | (Adv.) UNDERSTANDABLE, capable of being understood. |
| understander | one who understands. |
| unforeknown | not foreknown. |
| uninforming | not informing. |
| unkenned | unknown, strange. |
| unknowable | that cannot be known (noun) something that cannot be known |
| unknowableness | the state of being unknowable. |
| unknowably | (Adv.) UNKNOWABLE, that cannot be known. |
| unknowing | ignorant, unaware (noun) a state of not knowing |
| unknowingly | (Adv.) UNKNOWING. |
| unknowingness | the state of being unknowing. |
| unknownness | the state of being unknown. |
| unthink | to take back something thought. |
| unthinkable | that cannot be thought. |
| unthinkableness | the state of being unthinkable. |
| unthinkably | (Adv.) UNTHINKABLE, that cannot be thought. |
| unthinkingly | (Adv.) UNTHINKING. |
| unweeting | (Arch.) unwitting. |
| unweetingly | (Adv.) UNWEETING, unwitting. |
| unwist | (Arch.) not known; unknown. |
| visualiser | one who visualises. |
| visualization | the formation of mental visual images. |
| visualizer | one who visualizes. |
| volve | (Obs.) to turn over and over; to ponder. |
| wate | (Scots) 3rd pers. of wit, to know. |
| ween | (Arch.) to think; to imagine. |
| weet | wet (verb, arch.) to know |
| weete | (Obs.) to know. |
| weeten | (Spenser) to know. |
| weetingly | (Adv.) WEETING, knowing. |
| weetless | (Obs.) unknowing. |
| wis | a sham archaic word for to know. |
| wist | (Arch.) to know. |
| wit | intelligence; humour (verb) to know |
| wittingly | (Adv.) WITTING, knowing. |
| wonder | to have a feeling of curiosity or doubt. |
| wonderer | one who wonders. |
| wonderingly | (Adv.) WONDERING. |
| wost | (Arch.) 2nd pers. sing. of wit, to know. |
| wot | (Arch.) to know. |
| wottest | (Arch.) (2nd pers. sing.) WIT, to know. |