Ekh (Russian: Эх) is a spoken interjection in Russian and certain other Slavic languages. Ekh-ma (Эх-ма) is closely related.
It is typically spoken by itself or at the beginning of a sentence, and can be used to express wonder, feeling sorry for something, reproach, pride at a just-accomplished feat, and other strong feelings.
Literary examples
References
Ekh (expression) Wikipedia(Text) CC BY-SA