124 entries under spontaneous topic. ×

53
open(verb, adjective, feature, characteristic, close)
50
loose(verb, adjective, adverb, calm, drop)
25
unconstrained(adjective, adverb, feature, characteristic, close)
23
unrestrained(noun, adjective, adverb, clear, simple)
23
independent(adjective, feature, characteristic, open, free)
23
frank(noun, adjective, feature, characteristic, open)
21
gratuitous(adjective, feature, characteristic, charge, allow)
17
autonomous(adjective, feature, characteristic, separate, honor)
17
complimentary(adjective, adverb, feature, characteristic, charge)
17
voluntary(adjective, feature, characteristic, open, honor)
13
casual(adjective, adverb, simple, easy, fake)
13
genuine(adjective, feature, characteristic, open, honor)
13
informal(adjective, adverb, open, simple, fake)
12
costless(adjective, charge, courtesy, gratuitous)
11
familiar(adjective, close, open, direct, simple)
11
straightforward(adjective, feature, characteristic, open, honor)
9
honorary(adjective, feature, characteristic, honor, detail)
9
unceremonious(adjective, open, simple, smart, plain)
9
unpaid(adjective, feature, characteristic, charge, deliberate)
8
unforced(adjective, feature, characteristic, open, simple)
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APASmart Define. (2016). free thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/free/thesaurus/synonyms
ChicagoSmart Define. 2016. "free thesaurus" https://smartdefine.org/free/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, free thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/free/thesaurus/synonyms>.
MLASmart Define. "free thesaurus" 1 March 2016. Web. 20 September 2026. <https://smartdefine.org/free/thesaurus/synonyms>