1
unprepared(adjective, free, informal, casual, snap)
1
unrehearsed(adjective, free, informal, casual, impulsive)
1
unstudied(adjective, free, informal, casual, impulsive)
1
winging it(expression, adjective, free, casual, unrehearsed)
0
abruptly
0
agilely
0
apace
0
as the fancy takes you
0
as the mood takes you
0
at your own sweet will
0
boldly
0
brashly
0
carelessly
0
daringly
0
dead
0
double-quick
0
excitedly
0
expeditiously
0
extemporal(unrehearsed, extemporary)
0
fast
13 years ago|261 views|share |citing 
APASmart Define. (2013). on impulse thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/on_impulse/thesaurus/synonyms
ChicagoSmart Define. 2013. "on impulse thesaurus" https://smartdefine.org/on_impulse/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, on impulse thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/on_impulse/thesaurus/synonyms>.
MLASmart Define. "on impulse thesaurus" 18 May 2013. Web. 25 September 2026. <https://smartdefine.org/on_impulse/thesaurus/synonyms>