47 entries under unprepared topic. ×

3
spur-of-the-moment(adjective, free, prepared, spontaneous)
3
undevised
3
unscripted(adjective, spontaneous, impromptu, unplanned)
2
automatic(adjective, free, simple, fake, natural)
2
free(adjective, simple, fake, natural, casual)
2
improviso(adjective, free, spontaneous, impromptu)
2
unarranged(adjective, spontaneous, unplanned, unrehearsed)
1
autoschediastic(adjective, free, casual, impulsive, spontaneous)
1
expedient(adjective, free, casual, crude, impulsive)
1
faked(untrue, developed, fictitious, invented)
1
immediate(free, casual, impulsive, spontaneous)
1
improv(adverb, free, casual, spontaneous)
1
informal(adjective, free, casual, impulsive, spontaneous)
1
jamming(free, casual, impulsive, spontaneous)
1
on-the-spot(free, casual, impulsive, spontaneous)
1
on impulse(expression, free, casual, impulsive)
1
played by ear(expression, idiom, unqualified, unrehearsed)
1
shot from the hip(expression, idiom, unplanned, unrehearsed)
1
toss off(expression, free, casual, impulsive, spontaneous)
1
toss out(expression, free, casual, impulsive, spontaneous)
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APASmart Define. (2015). improvised thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/improvised/thesaurus/synonyms
ChicagoSmart Define. 2015. "improvised thesaurus" https://smartdefine.org/improvised/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, improvised thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/improvised/thesaurus/synonyms>.
MLASmart Define. "improvised thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/improvised/thesaurus/synonyms>