think

v.

1. To examine with the mind

   cogitate, reason, deliberate, ideate, muse, ponder, consider, contemplate, deliberate, stop to consider, study, reflect, imagine, conceive, examine, think twice, estimate, evaluate, appraise, resolve, ruminate, scan, confer, consult, meditate, meditate upon, take under consideration, have on one's mind, brood over, speculate, weigh, have in mind, keep in mind, bear in mind, mull over*, turn over*, cudgel one's brains*, sweat over*, stew*, bone*, beat one's brains*, rack one's brains*, use the old bean*, do some tall headwork*, do some hefty headwork*, figure out*, put on one's thinking cap*, use one's head*, pick one's steps*, hammer away at*, hammer out*, bury oneself in*; see also analyze 1.

   Antonyms neglect*, take for granted, accept. *

2. To believe

   be convinced, deem, hold; see believe 1.

3. To suppose

   imagine, guess, presume; see assume 1.

4. To form in the mind

   conceive, invent, create; see imagine 1.

5. To remember

   recollect, recall, reminisce; see remember 1, 2.

think is the general word meaning to exercise the mental faculties so as to form ideas, arrive at conclusions, etc. learn to think clearly; reason implies a logical sequence of thought, starting with what is known or assumed and advancing to a definite conclusion through the inferences drawn he reasoned that she would accept; cogitate is used, sometimes humorously, of a person who is, or appears to be, thinking seriously or hard I was cogitating, not daydreaming; reflect implies a turning of one's thoughts on or back on a subject and connotes deep or quiet continued thought he reflected on the day's events; speculate implies a reasoning on the basis of incomplete or uncertain evidence and therefore stresses the conjectural character of the opinions formed to speculate on the possibility of life on Mars; deliberate implies careful and thorough consideration of a matter in order to arrive at a conclusion the jury deliberated on the case