kupuj

Kupuj is a Polish verb form that functions as the second-person singular imperative of the imperfective verb kupować, meaning "to buy." It is used to give a direct command or exhortation in informal speech.

Grammatically, kupuj has parallel imperative forms for different persons: kupujcie is the second-person plural form, and kupujmy is the first-person plural form (let us buy). The negative form is nie kupuj. As an imperfective verb, kupować denotes a habitual or repeated action rather than a single completed act. The related perfective form is kupić, which has its own imperative forms.

In usage, kupuj appears in everyday language, retail contexts, and advertising to encourage purchase or to instruct customers. It can appear in signage, product descriptions, and marketing slogans, as well as in ordinary conversation when urging someone to buy something.

Examples:

- Kupuj zdrową żywność na lokalnym targu.

- Kupuj teraz, aby skorzystać z promocji.

- Nie kupuj pochopnie.

A related linguistic note: kupować belongs to a family of Slavic verbs describing purchasing actions, with corresponding forms in other languages. The noun form kupowanie denotes the act of buying or purchasing in general. The concept contrasts with the perfective kupić, which emphasizes a single completed purchase.