think

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To have or formulate in the mind.
2. v. To reason about or reflect on; ponder: Think how complex language is. Think the matter through.
3. v. To decide by reasoning, reflection, or pondering: thinking what to do.
4. v. To judge or regard; look upon: I think it only fair.
5. v. To believe; suppose: always thought he was right.
6. v. To expect; hope: They thought she'd arrive early.
7. v. To intend: They thought they'd take their time.
8. v. To call to mind; remember: I can't think what her name was.
9. v. To visualize; imagine: Think what a scene it will be at the reunion.
10. v. To devise or evolve; invent: thought up a plan to get rich quick.
11. v. To bring into a given condition by mental preoccupation: He thought himself into a panic over the impending examination.
12. v. To concentrate one's thoughts on: "Think languor” ( Diana Vreeland).
13. v. To exercise the power of reason, as by conceiving ideas, drawing inferences, and using judgment.
14. v. To weigh or consider an idea: They are thinking about moving.
15. v. To bring a thought to mind by imagination or invention: No one before had thought of bifocal glasses.
16. v. To recall a thought or an image to mind: She thought of her childhood when she saw the movie.
17. v. To believe; suppose: He thinks of himself as a wit. It's later than you think.
18. v. To have care or consideration: Think first of the ones you love.
19. v. To dispose the mind in a given way: Do you think so?
20. adj. Informal Requiring much thought to create or assimilate: a think book.
21. n. The act or an instance of deliberate or extended thinking; a meditation.
22. idiom. come to think of it Informal When one considers the matter; on reflection: Come to think of it, that road back there was the one we were supposed to take.
23. idiom. aloud To speak one's thoughts audibly.
24. idiom. think better of To change one's mind about; reconsider.
25. idiom. think big To plan ambitiously or on a grand scale.
26. idiom. think little of To regard as inferior; have a poor opinion of.
27. idiom. think nothing of To give little consideration to; regard as routine or usual: thought nothing of a 50-mile trip every day.
28. idiom. think twice To weigh something carefully: I'd think twice before spending all that money on clothes.

Century Dictionary and Cyclopedia

1. To judge; say to one's self mentally; form as a judgment or conception.
2. To form a mental image of; imagine: often equivalent to recollect; recall; consider.
3. To cognize; apprehend; grasp intellectually.
4. To judge problematically; form a conception of (something) in the mind and recognize it as possibly true, without decidedly assenting to it as such.
5. To purpose; intend; mean; contemplate; have in mind (to do): usually followed by an infinitive clause as the object.
6. To hold as a belief or opinion; opine; believe; consider.
7. To feel: as, to think scorn.
8. To modify (an immediate object of cognition) at will; operate on by thought (in a specified way).
9. To devise; plan; project.
10. To solve by process of thought: as, to think out a chess problem.
11. To exercise the intellect, as in apprehension, judgment, or inference; exercise the cognitive faculties in any way not involving outward observation, or the passive reception of ideas from other minds. In this sense the verb think is often followed, by on, of, about, etc., with the name of the remote object sought to be understood, recalled, appreciated, or otherwise investigated by the mental process.
12. To imagine: followed by of or on.
13. To attend (on); fasten the mind (on): followed by of.
14. To entertain a sentiment or opinion (in a specified way): with of: as, to think highly of a person's abilities.
15. To have a (specified) feeling (for); be affected (toward); especially, to have a liking or fondness: followed by of.
16. To think the time long; become weary or impatient, especially in waiting for something.
17. Synonyms To contemplate, reason.
18. n. A thinking; thought.
19. To seem; appear: with indirect object (dative).
20. To seem good.

Wiktionary

1. v. to ponder, to go over in one's head
2. v. To communicate to oneself in one's mind, to try to find a solution to a problem.
3. v. to conceive of something or someone (usually followed by of or on)
4. v. To be of the opinion (that).
5. v. To guess; to reckon.
6. v. To consider, judge, regard, or look upon (something) as.
7. v. To seem, to appear.
8. n. An act of thinking; consideration (of something).

GNU Webster's 1913

1. v. To seem or appear; -- used chiefly in the expressions methinketh or methinks, and methought.
2. v. To employ any of the intellectual powers except that of simple perception through the senses; to exercise the higher intellectual faculties.
3. v. To call anything to mind; to remember.
4. v. To reflect upon any subject; to muse; to meditate; to ponder; to consider; to deliberate.
5. v. To form an opinion by reasoning; to judge; to conclude; to believe.
6. v. To purpose; to intend; to design; to mean.
7. v. To presume; to venture.
8. v. To conceive; to imagine.
9. v. To plan or design; to plot; to compass.
10. v. To believe; to consider; to esteem.
11. n. Act of thinking; a thought.

WordNet 3.0

1. n. an instance of deliberate thinking
2. v. be capable of conscious thought
3. v. have in mind as a purpose
4. v. focus one's attention on a certain state
5. v. dispose the mind in a certain way
6. v. recall knowledge from memory; have a recollection
7. v. judge or regard; look upon; judge.
8. v. bring into a given condition by mental preoccupation
9. v. imagine or visualize
10. v. ponder; reflect on, or reason about
11. v. use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments
12. v. have or formulate in the mind
13. v. expect, believe, or suppose
14. v. decide by pondering, reasoning, or reflecting