The synonym of Impromptu is

The synonym of Impromptu is
Past Papers: Board of Revenue (BoR) — Past Paper MCQs BoR Naib Tehsildar — Past Paper MCQs
A: Prepared
B: Unprepared
C: Train
D: Rehearsed

Unprepared corresponds to impromptu for spontaneous actions. Prepared rehearsed opposites train unrelated. For sudden speeches or decisions in performances.