koydu

Koydu is a Turkish verb form meaning "put" or "placed," used for the third-person singular past tense. It derives from koymak, the infinitive meaning "to put" or "to place." The form koydu is created by adding the simple past tense suffix -du to the root koy-, with the suffix vowel chosen by vowel harmony, so other past-tense forms include koydum, koydun, koyduk, koydunuz, and koydular.

In sentences, koydu indicates a completed action in which someone placed something somewhere. Turkish word order and case endings typically mark the object and destination before the verb, as in kitabı masaya koydu, meaning "he placed the book on the table."

Notes: koydu is a regular, productive form in Turkish; it illustrates common patterns of agglutination and vowel harmony in the language. The term appears in everyday speech, literature, and reporting as the standard past tense third-person form of koymak.

See also: koymak; Turkish grammar; Turkish verbs.