48 entries under expression topic. ×

3
off guard(adjective, friendly, inattentive, unprepared)
2
blind to(adjective, innocent, unfamiliar, unconscious)
2
caught napping(adjective, unconcerned, ignorant, unconscious)
2
deaf to(adjective, unconcerned, ignorant, unconscious)
2
easily taken in(idiom, foolish, innocent, susceptible)
2
out of it(adjective, idiom, unconcerned, ignorant)
1
being a sucker(foolish, innocent, susceptible, naive)
1
easy of belief
1
falling hook line and sinker(foolish, innocent, susceptible, naive)
1
in a daze(adjective, idiom, unconcerned, ignorant)
1
in ignorance of
1
in the dark(idiom, innocent, thoughtless, unfamiliar)
1
inclined to believe
1
kidding oneself(foolish, innocent, susceptible, naive)
1
not all there(adjective, idiom, unconcerned, ignorant)
1
not cognizant(adjective, unconcerned, ignorant, unconscious)
1
not ready(idiom, unqualified, unready)
1
not with it
1
out cold(adjective, unconcerned, ignorant, unconscious)
1
out to lunch(adjective, idiom, unconcerned, ignorant)
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APASmart Define. (2015). unsuspecting thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unsuspecting/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsuspecting thesaurus" https://smartdefine.org/unsuspecting/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unsuspecting thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unsuspecting/thesaurus/synonyms>.
MLASmart Define. "unsuspecting thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unsuspecting/thesaurus/synonyms>