Synonyms for suspicious

Adjective

1. leery, mistrustful, suspicious, untrusting, wary, distrustful (vs. trustful)

usage: openly distrustful and unwilling to confide

2. fishy, funny, queer, shady, suspect, suspicious, questionable (vs. unquestionable)

usage: not as expected; "there was something fishy about the accident"; "up to some funny business"; "some definitely queer goings-on"; "a shady deal"; "her motives were suspect"; "suspicious behavior"