pasikeisti

Pasikeisti is a Lithuanian verb formed with the prefix pa- attached to keisti, meaning to change. It is a perfective verb that denotes a completed change, transition, or exchange. It can describe a change of state (for example, time, conditions, or mood) or the act of swapping or exchanging objects, places, or ideas.

The verb is versatile and used in a range of contexts. For changes of state, it often expresses that something has become different: "Laikas pasikeitė" (Time has changed). For exchanges or swaps, it can mean to switch something with someone: "Jie pasikeitė vietomis" (They swapped places). Fixed expressions include "pasikeisti įpročiais" (to change one's habits) and "pasikeisti nuomonėmis" (to exchange opinions). In general, pasikeisti emphasizes the result of the change, rather than the process.

Grammatical notes: the infinitive is pasikeisti. It is used with different tenses to express completed actions: "pasikeitė" (it changed) in the past; "pasikeičia" (it changes) in the present; "pasikeisiu" (I will change) in the future. The prefix pa- contrasts with the bare verb keisti, which can indicate a more general or ongoing act of changing. The noun form is pasikeitimas (change or alteration).