40 entries under artless topic. ×

18
extemporaneous(adjective, simple, informal, natural, chance)
12
impromptu(adjective, free, simple, fake, informal)
8
extempore(adjective, free, simple, fake, informal)
8
offhand(adjective, free, simple, fake, natural)
7
ad-lib(adjective, adverb, free, simple, fake)
6
off-the-cuff(adjective, adverb, simple, informal, natural)
6
unplanned(adjective, free, simple, fake, informal)
5
casual(adjective, free, simple, fake, natural)
4
impulsive(adjective, adverb, simple, natural, chance)
4
unstudied(adjective, free, simple, fake, natural)
2
automatic(adjective, free, simple, fake, natural)
2
free(adjective, simple, fake, natural, casual)
2
uncontrived(adjective, simple, natural, casual, impulsive)
1
break loose(expression, adjective, simple, natural, casual)
1
down(adjective, simple, natural, casual, impulsive)
1
free spirited(expression, adjective, simple, natural, casual)
1
from the hip(expression, adjective, idiom, simple, natural)
1
impetuous(adjective, simple, natural, casual, impulsive)
1
inevitable(adjective, simple, natural, casual, impulsive)
1
instinctive(adjective, simple, natural, casual, impulsive)
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APASmart Define. (2015). improvised thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/improvised/thesaurus/synonyms
ChicagoSmart Define. 2015. "improvised thesaurus" https://smartdefine.org/improvised/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, improvised thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/improvised/thesaurus/synonyms>.
MLASmart Define. "improvised thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/improvised/thesaurus/synonyms>