Synonyms of impromptu

1 Syllable

fake

2 Syllables

vamped, faked, casual, bandaid, improv, pickup, band-aid, sudden, stopgap, offhand, ad-lib, winged

3 Syllables

spontaneous, unstudied, unbidden, unscripted, adlibbed, ad-libbing, subito, unplanned, off-the-cuff

4 Syllables

improviso, improvised, unprepared, unrehearsed, aleatory, spontaneously, extempore

5 Syllables

spur-of-the-moment, unpremediated, extemporized, extemporaneous, autoschediastic, extemporary

6 Syllables

unpremeditated, improvisatory, extemporization