think, cogitate, reflect, reason, speculate, deliberate mean to use one's powers of conception, judgment, or inference. think is general and may apply to any mental activity, but used alone often suggests …

1. To have or formulate in the mind: Think the happiest thought you can think. 2. a. To reason about or reflect on; ponder: Think how complex language is. Think the matter through. b. To decide by …

THINK definition: 1. to believe something or have an opinion or idea: 2. to have a low opinion of someone or…. Learn more.

If you say that you think that something is true or will happen, you mean that you have the impression that it is true or will happen, although you are not certain of the facts.

to use one's mind in a reasoning way to make a decision about a given situation:[no object] Think carefully before you act.

Jan 20, 2026 · think (third-person singular simple present thinks, present participle thinking, simple past and past participle thought) (transitive) To ponder, to go over in one's mind.

THINK definition: to have a conscious mind, to some extent of reasoning, remembering experiences, making rational decisions, etc. See examples of think used in a sentence.