Impromptu



adjective
1.
(without preparation, spontaneous. an impromptu speech, etc) ដែលឥតគ្រោងទុកជាមុន, ជាមុន, ដែលភ្លាម, ដោយឥតបម្រុងទុក
ENGLISH MEANING
noun
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.
adjective / adverb
1.
Offhand; without previous study; extemporaneous; extempore; as, an impromptu verse.