6
realistic
3
paranoid
2
distrustful
2
doubting
2
mistrustful
2
suspicious
1
apprehensive(adjective, clear, anxious, fearful, confident)
1
careful
1
cautious
1
cynical
1
disbelieving
1
down-to-earth
1
fishy(adjective, doubtful, suspicious)
1
hardheaded
1
incredulous
1
leery
1
pragmatic
1
skeptical
1
suspecting
1
unbelieving
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APASmart Define. (2015). unsuspicious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unsuspicious/thesaurus/antonyms
ChicagoSmart Define. 2015. "unsuspicious thesaurus" https://smartdefine.org/unsuspicious/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unsuspicious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unsuspicious/thesaurus/antonyms>.
MLASmart Define. "unsuspicious thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/unsuspicious/thesaurus/antonyms>