Synonyms|269Antonyms|51|Broader|0Narrower|0Related|330

69 entries under spontaneous topic. ×

2
improvised(adjective, simple, natural, casual, impulsive)
2
independent(natural, voluntary)
2
optional(natural, voluntary)
2
uncompelled(adjective, simple, natural, casual, impulsive)
2
unforced(adjective, simple, natural, casual, impulsive)
2
unintentional(adjective, simple, natural, casual, impulsive)
2
unwitting(adjective, natural, voluntary, forced)
2
volunteer(natural, voluntary)
2
willful(natural, voluntary)
1
ad-lib(adjective, adverb, simple, violent, natural)
1
break loose(expression, adjective, simple, natural, casual)
1
casual(adjective, simple, natural, impulsive, willing)
1
down(adjective, simple, natural, casual, impulsive)
1
extempore(adjective, simple, natural, casual, impulsive)
1
free spirited(expression, adjective, simple, natural, casual)
1
from the hip(expression, adjective, idiom, simple, natural)
1
inevitable(adjective, simple, natural, casual, impulsive)
1
irresistible(adjective, simple, natural, casual, impulsive)
1
off-the-cuff(adjective, simple, natural, casual, impulsive)
1
off top of head(expression, adjective, idiom, simple, natural)
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HarvardSmart Define 2015, unprompted thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unprompted/thesaurus/synonyms>.
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