Synonyms|156Antonyms|57|Broader|4Narrower|0Related|347

36 entries under spontaneous topic. ×

1
casual(adjective, free, impulsive, unprepared)
1
fake(adjective, free, casual, impulsive)
1
free(casual, impulsive, unprepared, impromptu)
1
from the hip(expression, adjective, idiom, impulsive)
1
informal(free, casual, impulsive, snap)
1
made-up(free, impulsive, impromptu, improvised)
1
spur of the moment(expression, adjective, free, casual)
1
toss off(expression, free, casual, impulsive)
1
toss out(expression, free, casual, impulsive)
0
Band-Aid(unplanned, unpremeditated)
0
fly-by-night(unplanned, unpremeditated)
0
hit-or-miss(unplanned, unpremeditated)
0
not rehearsed
0
off the top of one's head
0
unarranged(adjective, unprepared, unplanned, unpremeditated)
0
unpracticed
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ChicagoSmart Define. 2015. "unrehearsed thesaurus" https://smartdefine.org/unrehearsed/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, unrehearsed thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unrehearsed/thesaurus/synonyms>.
MLASmart Define. "unrehearsed thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/unrehearsed/thesaurus/synonyms>