45 entries under free topic. ×

2
by ear(expression, adjective, fake, informal)
2
improv(adjective, fake, informal, casual)
2
improvisatory(adjective, fake, informal, casual)
2
improviso(adjective, fake, informal, casual)
2
on-the-spot(adjective, fake, informal, casual)
1
ad-lib(adjective, fake, casual, impulsive)
1
ad hoc(expression, adjective, casual, unrehearsed)
1
ad lib(expression, adjective, informal, casual)
1
at first glance(expression, idiom, informal, casual)
1
automatic(adjective, informal, casual, impulsive)
1
autoschediastic(adjective, fake, casual, impulsive)
1
casual(adjective, informal, impulsive, unprepared)
1
expedient(adjective, informal, casual, snap)
1
extemporaneous(adjective, casual, impulsive, spontaneous)
1
extemporary(adjective, fake, casual, impulsive)
1
extempore(adjective, casual, impulsive, unprepared)
1
fake(adjective, casual, impulsive, spontaneous)
1
immediate(adjective, informal, casual, snap)
1
impromptu(adjective, casual, impulsive, unprepared)
1
improvised(adjective, casual, impulsive, spontaneous)
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APASmart Define. (2013). on impulse thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/on_impulse/thesaurus/synonyms
ChicagoSmart Define. 2013. "on impulse thesaurus" https://smartdefine.org/on_impulse/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2013, on impulse thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/on_impulse/thesaurus/synonyms>.
MLASmart Define. "on impulse thesaurus" 18 May 2013. Web. 28 September 2026. <https://smartdefine.org/on_impulse/thesaurus/synonyms>