Impromptu

1.

(without preparation, spontaneous. an impromptu speech, etc) ដែលឥតគ្រោងទុកជាមុន, ជាមុន, ដែលភ្លាម, ដោយឥតបម្រុងទុក

1.

Something made or done offhand, at the moment, or without previous study; an extemporaneous composition, address, or remark.

2.

A piece composed or played at first thought; a composition in the style of an extempore piece.

1.

Offhand; without previous study; extemporaneous; extempore; as, an impromptu verse.