Synonyms|264Antonyms|20|Broader|2Narrower|0Related|11

87 entries under voluntary topic. ×

1
impromptu(adjective, simple, natural, casual, impulsive)
1
improvised(adjective, simple, natural, casual, impulsive)
1
impudent(adjective, willing, arrogant, unwelcome)
1
impulsive(adjective, simple, natural, casual, willing)
1
inevitable(adjective, simple, natural, casual, impulsive)
1
intentional(adjective, free, keen, happy, agreeable)
1
involuntary(adjective, simple, natural, casual, impulsive)
1
irresistible(adjective, simple, natural, casual, impulsive)
1
natural(adjective, simple, casual, impulsive, willing)
1
not asked(expression, adjective, willing, arrogant, freely)
1
off-the-cuff(adjective, simple, natural, casual, impulsive)
1
off top of head(expression, adjective, idiom, simple, natural)
1
offhand(adjective, simple, natural, casual, impulsive)
1
opted(adjective, free, deliberate, natural, witting)
1
overbearing(adjective, willing, arrogant, unwelcome)
1
presumptuous(adjective, willing, arrogant, unwelcome)
1
simple(adjective, natural, casual, impulsive, willing)
1
supererogatory(adjective, willing, arrogant, unwelcome)
1
unartful(adjective, simple, natural, casual, impulsive)
1
unavoidable(adjective, simple, natural, casual, impulsive)
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APASmart Define. (2015). unbidden thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unbidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "unbidden thesaurus" https://smartdefine.org/unbidden/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unbidden thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unbidden/thesaurus/synonyms>.
MLASmart Define. "unbidden thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unbidden/thesaurus/synonyms>