Kupil

Kupil is the transliteration used in English-language texts for the Cyrillic word купил, which is the masculine singular past tense form of купить (to buy). It appears in Russian-language sentences to indicate that a male subject performed the action of buying in the past.

Usage and form: Kupil marks a completed purchase by a masculine subject. For example, Он купил книгу сегодня means “He bought a book today.” The corresponding forms for other genders and numbers are купила (she bought), купило (it bought), and купили (they bought). The verb купить is perfective, so kupil specifically refers to a completed act of purchasing.

Morphology and tense: Kupil is the past tense form of купить. In Russian, perfective verbs use past tense forms that agree with the subject’s gender and number. The present tense does not apply to perfective verbs; future forms exist (for example, я куплю, ты купишь, он купит).

Etymology and notes: The form derives from the verb root куп- with the past-tense suffix -ил. In transliterated texts or quotations, kupil is used to render купил without Cyrillic script. It is not an English word on its own but a morphological form of a Russian verb.

Cross-linguistic context: Similar past-tense forms exist in related languages, but with different spellings. Ukrainian uses купив (kupiv) for masculine past, while Belarusian uses купіў (kupiv); these forms are distinct from the Russian kupil in spelling and pronunciation.