1. extemporaneous - Adjective
2. extemporaneous - Adjective Satellite
Composed, performed, or uttered on the spur of the moment, or without previous study; unpremeditated; off-hand; extempore; extemporary; as, an extemporaneous address or production.
Source: Webster's dictionaryhis ad-lib comments showed poor judgment Source: Internet
an extemporaneous piano recital Source: Internet
an extemporary lecture Source: Internet
an extempore skit Source: Internet
an impromptu speech Source: Internet
offhand excuses Source: Internet