Ebastabiilse

ebastabiilse is the genitive singular form of the Estonian adjective ebastabiilne, which means unstable. The form is used when the noun it modifies is in the genitive case, for example in phrases such as ebastabiilse olukorra mõju (the impact of the unstable situation) or ebastabiilse riigi poliitika (the policy of an unstable state). The base adjective ebastabiilne is built from the prefix eb- meaning not and the stem stabiilne meaning stable, yielding the sense “not stable” or “unstable.”

In standard Estonian, ebastabiilne declines like other adjectives, and ebastabiilse is one of its case-specific forms. It is most common in formal or analytical writing, including economic, political, and scientific contexts, where a noun is in genitive. In everyday speech, speakers typically use the attributive form before a nominative noun, for example ebastabiilne olukord, meaning “an unstable situation.”

Related terms include ebastabiilsus (instability) and stabiilne (stable), with its noun form stabiilsus (stability) and related genitive ebastabiilsuse. The word is widely understood in Estonian and is part of standard descriptive vocabulary used to characterize conditions, systems, or environments lacking stability.