74 entries under simple topic. ×

1
free-spirited(honest, modest, straightforward, humble)
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free spirited(expression, adjective, natural, casual)
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genuine(adjective, open, honest, plain)
1
homey(honest, modest, natural, straightforward)
1
impetuous(adjective, natural, casual, impulsive)
1
impromptu(adjective, natural, casual, impulsive)
1
improvised(adjective, natural, casual, impulsive)
1
impulsive(adjective, natural, casual, willing)
1
inelaborate(adjective, honest, plain, modest)
1
inevitable(adjective, natural, casual, impulsive)
1
innocent(honest, plain, natural, artless)
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instinctive(adjective, natural, casual, impulsive)
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involuntary(adjective, natural, casual, impulsive)
1
irresistible(adjective, natural, casual, impulsive)
1
laid-back(honest, modest, straightforward, humble)
1
lowly(adjective, honest, plain, modest)
1
modest(honest, natural, straightforward, humble)
1
off-the-cuff(adjective, natural, casual, impulsive)
1
off top of head(expression, adjective, idiom, natural)
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offhand(adjective, natural, casual, impulsive)
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APASmart Define. (2015). up front thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/up_front/thesaurus/synonyms
ChicagoSmart Define. 2015. "up front thesaurus" https://smartdefine.org/up_front/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, up front thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/up_front/thesaurus/synonyms>.
MLASmart Define. "up front thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/up_front/thesaurus/synonyms>