A carefully considered thought about something.

Dutch: overdenking
Polish: refleksja

Attentive consideration and meditation:
— After much cogitation he rejected the offer.

synonym: study.

Roget 451: thought; exercitation of the intellect^†, exercise of the intellect; intellection; reflection, cogitation, consideration, meditation, study, lucubration, speculation, deliberation, pondering; head work, brain work; cerebration; deep reflection; close study, application etc. (attention) 457.    abstract thought, abstraction contemplation, musing; brown study etc. (inattention) 458; reverie, Platonism; depth of thought, workings of the mind, thoughts, inmost thoughts; self-counsel self-communing, self-consultation; philosophy of the Absolute, philosophy of the Academy, philosophy of the Garden, philosophy of the lyceum, philosophy of the Porch.    association of thought, succession of thought, flow of thought, train of thought, current of thought, association of ideas, succession of ideas, flow of ideas, train of ideas, current of ideas.    after thought, mature thought; reconsideration, second thoughts; retrospection etc. (memory) 505; excogitation^†; examination etc. (inquiry) 461; invention etc. (imagination) 515.    thoughtfulness etc. adj.. ... show more

Polish: refleksja