Past tense of cogitate; thought deeply or carefully about something.
From Latin cogitatus, past participle of cogitare (to think, ponder), from co- (together) + agitare (to drive, move). The meaning evolved from 'to turn over in the mind' to 'to think deeply.'
This word was made famous by Descartes' philosophical statement 'Cogito, ergo sum' (I think, therefore I am), which became the foundation of modern Western philosophy. The act of cogitating literally means your mind is 'driving things together'—combining ideas to understand them.
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