For the verb: "to think"

Simple Past: thought
Past Participle: thought

WordReference Random House Learner's Dictionary of American English © 2015
think1 /θɪŋk/USA pronunciation   v., thought/θɔt/USA pronunciation  think•ing, n. 

  • [not: be + ~-ing;
    no object]
    to have a conscious mind that can reason, remember, and make decisions:Descartes said, "I think, therefore I am,'' meaning that the capacity to think was central to what it means to be human.
  • [no object] to use one's mind in a reasoning way to make a decision about a given situation:Think carefully before you act.
  • to have a certain thing as the subject of one's thoughts: [no object]I was thinking about college the other day.[+ (that) clause]I was thinking that our college days were the best years of our lives.[used with quotations]"That's odd,'' Alice thought.[+ object]Think nice thoughts and go to sleep.
  • [+ of + object] to call something to one's conscious mind:to think of others less fortunate than we are.
  • to consider a possible action or plan: [no object]thinking about cutting her hair.[+ (that) clause]We think that we'll go back to Ithaca some day.
  • [+ of + object] to invent or conceive of something:to think of a plan.
  • [not: be + ~-ing; ~ + (that) clause] to have a belief or opinion:I think she is funny.
  • to consider a person or thing as indicated: [+ adjective + of + object]I only think well of her.[+ object + adjective]He thought me unkind.[+ object + noun]She thought him a total fool.
  • [+ to + verb] to anticipate or expect:I did not think to call you; I know I should have.
  • think over, to evaluate for possible action: [+ object + over]Think the deal over and call us tomorrow.[+ over + object]Think over her offer.
  • think through or out, to solve by thinking; come up with something by thinking: [+ through/out + object]to think through a problem.[+ object + through/out]to think a problem through.
  • think up, to invent; devise;
    come up with: [+ up + object]I couldn't think up a better excuse.[+ object + up]to think something up.

  • n. [countable]
  • Informal Termsthe act or a period of thinking:First, give it a good think.
  • idiom
    1. Idiomsthink better of, [+ object] to reconsider:He was all set to yell at her, but then he thought better of it and kept quiet.
    2. Idiomsthink fit, [no object] to believe or consider (something) to be proper or appropriate:Do as you think fit; I trust your judgment.
    3. Idiomsthink little or nothing of, [+ little/nothing + of + object] to believe (something) to be not worthy of notice;
      belittle or disparage:thinks nothing of bicycling 20 miles.
    4. Idiomsthink the world of, [+ object] to like or admire greatly:Her father thinks the world of her.
    5. Idiomsthink twice, to consider carefully before acting:urged him to think twice about going to Hanoi.

    think•er, n. [countable]

    WordReference Random House Unabridged Dictionary of American English © 2015
    think1  (thingk), 
    v., thought, think•ing, adj., n. 

  • to have a conscious mind, to some extent of reasoning, remembering experiences, making rational decisions, etc.
  • to employ one's mind rationally and objectively in evaluating or dealing with a given situation:Think carefully before you begin.
  • to have a certain thing as the subject of one's thoughts:I was thinking about you. We could think of nothing else.
  • to call something to one's conscious mind:I couldn't think of his phone number.
  • to consider something as a possible action, choice, etc.:She thought about cutting her hair.
  • to invent or conceive of something:We thought of a new plan.
  • to have consideration or regard for someone:Think of others first.
  • to esteem a person or thing as indicated:to think badly of someone.
  • to have a belief or opinion as indicated:I think so.
  • Computing(of a device or machine, esp. a computer) to use artificial intelligence to perform an activity analogous to human thought.

  • v.t. 
  • to have or form in the mind as an idea, conception, etc.
  • to consider for evaluation or for possible action upon:Think the deal over.
  • to regard as specified:He thought me unkind.
  • to believe to be true of someone or something:to think evil of the neighbors.
  • to analyze or evolve rationally:to think the problem out.
  • to have as a plan or intention:I thought that I would go.
  • to anticipate or expect:I did not think to find you here.
  • think better of, to change one's mind about; reconsider:She considered emigrating to Australia, but thought better of it.
  • think fit, to consider advisable or appropriate:By all means, take a vacation if you think fit.
  • think nothing of. See nothing (def. 17).
  • think of: 
    • to conceive of; imagine.
    • to have an opinion or judgment of.
    • to consider;
      anticipate:When one thinks of what the future may bring, one is both worried and hopeful.
    think out or through: 
    • to think about until a conclusion is reached;
      understand or solve by thinking.
    • to devise by thinking;
      contrive:He thought out a plan for saving time.
  • think twice, to weigh carefully before acting; consider:I would think twice before taking on such a responsibility.
  • think up, to devise or contrive by thinking:Can you think up an arrangement of furniture for this room?

  • adj. 
  • of or pertaining to thinking or thought.
  • Informal Terms[Informal.]stimulating or challenging to the intellect or mind:the think book of the year.Cf.think piece. 

  • n. 
  • Informal Terms[Informal.]the act or a period of thinking:I want to sit down and give it a good think.
  • Etymology:bef. 900;
    Middle English thinken, variant of thenken, Old English thencan;
    cognate with Dutch, German denken, Old Norse thekkja, Gothic thagkjan;
    akin to thank

    think2 (thingk), 
    v.i., thought, think•ing. [Obs.]
    1. to seem or appear (usually used impersonally with a dative as the subject). Cf.methinks. 
    Etymology:bef. 900;
    Middle English thinken, Old English thyncan;
    cognate with Dutch dunken, German dünken, Old Norse thykkja, Gothic thugkjan

    Collins Concise English Dictionary © HarperCollins Publishers::

    think /θɪŋk/ vb (thinks, thinking, thought)
    1. (tr; may take a clause as object) to consider, judge, or believe: he thinks my ideas impractical
    2. (intransitive) often followed by about: to exercise the mind as in order to make a decision; ponder
    3. (intransitive) to be capable of conscious thought: man is the only animal that thinks
    4. to remember; recollect
    5. (intransitive) followed by of: to make the mental choice (of): think of a number
    6. (may take a clause as object or an infinitive) to expect; suppose
    7. to be considerate or aware enough (to do something): he did not think to thank them
    8. (intransitive) to focus the attention on being: think thin, think big
    9. think twiceto consider carefully before deciding (about something)
    1. informal a careful, open-minded assessment
    2. (modifier) informal characterized by or involving thinkers, thinking, or thought

    See also think over, think upEtymology: Old English thencan; related to Old Frisian thenza, Old Saxon thenkian, Old High German denken, Old Norse thekkja, Gothic thagkjan

    ˈthinker n

    'think' also found in these entries:

    Forum discussions with the word(s) "think" in the title:

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