Synonym: concentrate, conclude, consider, contemplate, deliberate, expect, gather, guess, imagine, infer, judge, meditate, ponder, reason, study, suppose, suspect, theorize, understand. Similar words: think out, think up, think of, think over, think twice, thin, thing, within. Meaning: [θɪŋk] 
n. an instance of deliberate thinking. v. 1. judge or regard; look upon; judge 2. expect, believe, or suppose 3. use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments 4. recall knowledge from memory; have a recollection 5. imagine or visualize 6. focus one's attention on a certain state 7. have in mind as a purpose 8. decide by pondering, reasoning, or reflecting 9. ponder; reflect on, or reason about 10. dispose the mind in a certain way 11. have or formulate in the mind 12. be capable of conscious thought 13. bring into a given condition by mental preoccupation.
n. an instance of deliberate thinking. v. 1. judge or regard; look upon; judge 2. expect, believe, or suppose 3. use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments 4. recall knowledge from memory; have a recollection 5. imagine or visualize 6. focus one's attention on a certain state 7. have in mind as a purpose 8. decide by pondering, reasoning, or reflecting 9. ponder; reflect on, or reason about 10. dispose the mind in a certain way 11. have or formulate in the mind 12. be capable of conscious thought 13. bring into a given condition by mental preoccupation. 
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(31) I think I've caught a bug.
(32) Personally I think it's a waste of time.
(33) She said she needs time to think it over.
(34) I think he has a crush on u.
(35) What do you think you are doing?
(36) I think it is a matter of opinion.
(37) I think I'll give the fish course a miss.
(38) I think more customers probably prefer a soft sell.
(39) I think silk ties can be quite nice. Sentencedict.com
(40) I think he is shallow, vain and untrustworthy.
(41) I think I'll tackle the repairs next weekend.
(42) I do not think he is considering Emma's welfare.
(43) What do u think about Japan? --I like it.
(44) I think they've had a quarrel .
(45) I don't think that will be necessary.
(46) Let's think it over in cold blood.
(47) I don't think we should get engaged yet.
(48) I don't think you are being entirely truthful.
(49) You are more beautiful than you think.
(50) I think that we will live together forever.
(51) He's very bothered about what people think of him.
(52) I think I fall in love with you.
(53) I blush whenever I think about it.
(54) Before you give up ,think of the reason why you held on so long.
(55) I don't think you realize how important this is to her.
(56) I think it would be true to say that the show was a success.
(57) This is only the draft of my speech, but what do you think of it?
(58) I shudder to think how much this is all going to cost .
(59) I'd love to go to the match tomorrow do you think you can wangle it?
(60) Couldn't you contrive a meeting between them? I think they'd be ideally suited.
More similar words: think out, think up, think of, think over, think twice, thin, thing, within, nothing, anything, writhing, clothing, nothing but, something, anything but, breathing, everything, something of, something else, something like, pink, link, blink, link up, shrink, drink up, drink to, sprinkle, drink down, this.