8
unplanned(adjective, free, simple, fake, natural)
7
unworldly(adjective, simple, easy, honest, slow)
6
careless(adjective, artless)
6
casual(adjective, free, simple, fake, loose)
6
extemporary(adjective, free, casual, impulsive, spontaneous)
6
spur-of-the-moment(adjective, free, spontaneous, impromptu, unrehearsed)
6
unprepared(adjective, free, casual, spontaneous, impromptu)
6
unpretentious(adjective, open, simple, reasonable, easy)
6
unschooled(adjective, simple, easy, clean, honest)
5
ad lib(expression, adjective, free, casual, unrehearsed)
5
automatic(adjective, free, simple, fake, natural)
5
easy(simple, real, genuine, unaffected, unpretentious)
5
improvised(adjective, free, simple, fake, natural)
5
plain(adjective, open, simple, reasonable, easy)
5
unconscious(adjective, simple, natural, casual, impulsive)
5
unforced(adjective, open, simple, easy, loose)
5
unrehearsed(adjective, free, casual, impulsive, spontaneous)
4
ad-lib(adjective, free, simple, fake, natural)
4
candid(adjective, easy, honest, plain, natural)
4
ignorant(adjective, open, easy, real, sincere)
11 years ago|7.8k views|share |citing 
APASmart Define. (2015). unstudied thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unstudied/thesaurus/synonyms
ChicagoSmart Define. 2015. "unstudied thesaurus" https://smartdefine.org/unstudied/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unstudied thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unstudied/thesaurus/synonyms>.
MLASmart Define. "unstudied thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unstudied/thesaurus/synonyms>