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By Andrea Widburg | In a little over five minutes, Hegseth praises Harvard’s great past and completely buries its shameful present—and says the military won’t pay for its classes anymore. What...

The meaning of THINKER is one that thinks. How to use thinker in a sentence.

A thinker is just what it sounds like — a person who does a lot of thinking. If you're a thinker, it may take you a while to make an important decision.

Definition of thinker noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A thinker is a person who spends a lot of time thinking deeply about important things, especially someone who is famous for thinking of new or interesting ideas.

These are big, serious international movements created by thoughtful, kind and empathetic thinkers and doers dedicated to changing the world. Doers, creators, thinkers, citizens of the world -- those who …

Jan 20, 2026 · Noun thinker (plural thinkers) One who spends time thinking, contemplating or meditating.

Thinker definition: One who devotes much time to thought or meditation.

think•er (ˈθɪŋ kər) n. 1. a person who thinks, esp. in a specified way or manner: a quick thinker. 2. a person who has a well-developed faculty for thinking: the great thinkers.