ükskordne

õskordne is an Estonian adjective meaning "once, one‑time, single occurrence." It describes events, actions, or objects that happen or exist only a single time, without repetition or continuation. The term commonly appears when referring to a solitary experience, a single-use item, or a one‑off event, and it conveys a sense of transience or lack of continuity.

The word is constructed from the Estonian root "üks" (one) and "kord" (time), followed by the adjectival suffix "-ne." It thus literally translates to "one‑time." This formation pattern is typical in Estonian for expressing frequency or repetition, contrasting with words like "korduv" (repeating) or "põnev" (habitual).

In everyday speech, õskordne is used for items like a single-use plastic cup, a one‑time conference, or a one‑off sale. In literature, it often highlights fleeting moments or brief encounters, underscoring the fleeting nature of the described experience. In linguistics, the adjective is noted as emphasizing non‑habitual occurrences and is sometimes contrasted with verbs that express repeated action.

Related Estonian terms include "tahe" for habitual actions, "pikkajaline" for long‑lasting, and "püüdsÕskordne" which can describe transient activities such as a burst of laughter or a sudden flash. The concept is also relevant in legal and administrative contexts, where a "ükskordne" event may be recorded as a one‑off incident.