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[thingk] /θɪŋk/
verb (used without object), thought, thinking.
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.
(of a device or machine, especially a computer) to use artificial intelligence to perform an activity analogous to human thought.
verb (used with object), thought, thinking.
to have or form in the mind as an idea, conception, etc.
to have or form in the mind in order to understand, know, or remember something else:
Romantic comedy is all about chemistry: think Tracy and Hepburn. Can't guess? Here's a hint: think 19th century.
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.
of or relating to thinking or thought.
Informal. stimulating or challenging to the intellect or mind:
the think book of the year.
Compare think piece.
Informal. the act or a period of thinking:
I want to sit down and give it a good think.
Verb phrases
think of,
  1. to conceive of; imagine.
  2. to have an opinion or judgment of.
  3. to consider; anticipate:
    When one thinks of what the future may bring, one is both worried and hopeful.
think out/through,
  1. to think about until a conclusion is reached; understand or solve by thinking.
  2. to devise by thinking; contrive:
    He thought out a plan for saving time.
think up, to devise or contrive by thinking:
Can you think up an arrangement of furniture for this room?
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. nothing (def 19).
think twice, to weigh carefully before acting; consider:
I would think twice before taking on such a responsibility.
Origin of think1
before 900; Middle English thinken, variant of thenken, Old English thencan; cognate with Dutch, German denken, Old Norse thekkja, Gothic thagkjan; akin to thank Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for think up
Historical Examples
  • Then, says I, for I was mad, where in hell did you think up all this ghostly tomfoolery?

    Every Man for Himself Norman Duncan
  • He supposed he must think up something to daub on there—the poorer the better.

    Chip, of the Flying U B. M. Bower
  • In the meantime Olive was trying to think up some entertainment that would amuse the girls on a stormy day.

  • Well, no use, Cap'n, I've got to think up some notion to keep him from comin' here.

    Fair Harbor Joseph Crosby Lincoln
  • I guess you can think up some hint of his whereabouts for me.

  • Keep him there till he weakens an' quits, or till I can think up some plan further.

  • We've all had them, and Kate has already used every possible adjective that you could think up.

    Miss Billy Eleanor H. Porter
  • Anyhow it's hard to guess the answer, so I'll think up one that's easier.

  • My advice to you is, to think up something you can do better than other people—that's what gives folks a real chance!

    A Round Dozen Susan Coolidge
  • "I'll have to think up some sort of a scenario to go with it," the manager said.

British Dictionary definitions for think up

think up

(transitive, adverb) to invent or devise: to think up a plan


verb thinks, thinking, thought
(transitive; may take a clause as object) to consider, judge, or believe: he thinks my ideas impractical
(intransitive) often foll by about. to exercise the mind as in order to make a decision; ponder
(intransitive) to be capable of conscious thought: man is the only animal that thinks
to remember; recollect: I can't think what his name is
(intransitive) foll by of. to make the mental choice (of): think of a number
(may take a clause as object or an infinitive)
  1. to expect; suppose: I didn't think to see you here
  2. to be considerate or aware enough (to do something): he did not think to thank them
(intransitive) foll by of. to consider; regard: she thinks of herself as a poet
(intransitive) to focus the attention on being: think thin, think big
(transitive) to bring into or out of a specified condition by thinking: to think away one's fears
(slang) I don't think, a phrase added to an ironical statement: you're the paragon of virtue, I don't think
think again, to reconsider one's decision, opinion, etc
think better of
  1. to change one's mind about (a course of action, decision, etc)
  2. to have a more favourable opinion of (a person)
(usually negative) think much of, to have a high opinion of
think nothing of
  1. to regard as routine, easy, or natural
  2. to have no compunction or hesitation about
  3. to have a very low opinion of
think twice, to consider carefully before deciding (about something)
(informal) a careful, open-minded assessment: let's have a fresh think about this problem
(modifier) (informal) characterized by or involving thinkers, thinking, or thought: a think session
(slang) you've got another think coming, you are mistaken and will soon have to alter your opinion
Derived Forms
thinker, noun
Word Origin
Old English thencan; related to Old Frisian thenza, Old Saxon thenkian, Old High German denken, Old Norse thekkja, Gothic thagkjan
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for think up



Old English þencan "conceive in the mind, think, consider, intend" (past tense þohte, p.p. geþoht), probably originally "cause to appear to oneself," from Proto-Germanic *thankjan (cf. Old Frisian thinka, Old Saxon thenkian, Old High German denchen, German denken, Old Norse þekkja, Gothic þagkjan); Old English þencan is the causative form of the distinct Old English verb þyncan "to seem or appear" (past tense þuhte, past participle geþuht), from Proto-Germanic *thunkjan (cf. German dünken, däuchte). Both are from PIE *tong- "to think, feel" which also is the root of thought and thank. The two meanings converged in Middle English and þyncan "to seem" was absorbed, except for archaic methinks "it seems to me." Jocular past participle thunk (not historical, but by analogy of drink, sink, etc.) is recorded from 1876.

Online Etymology Dictionary, © 2010 Douglas Harper
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think up in Medicine

think (thĭngk)
v. thought (thôt), think·ing, thinks

  1. To exercise the power of reason, as by conceiving ideas, drawing inferences, and using judgment.

  2. To weigh or consider an idea.

  3. To bring a thought to mind by imagination or invention.

  4. To recall a thought or an image to mind.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for think up



(also thingumabob or thingumadoodle or thingummy or thingamadoger or thingamadudgeon or thingumbob or thingamananny)An unspecified orunspecifiable object; something one does not know the name of or does not wish to name; dingus, doodad, gadget: When you want to go down you push this thingamajig up as high as it will go/ athingummy so addicted to lethal violence (entry form 1824+, first variant 1832+, others late 1700s+ or 1800s+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with think up

think up

Devise, contrive by thinking, as in She's an expert at thinking up interesting programs. [ Mid-1800s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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