Definition as Adjective

• not as expected
• openly distrustful and unwilling to confide

• fishy, funny, shady, suspect

• leery, mistrustful, untrusting, wary

• "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"

• Suspicious vs fishy
• Suspicious vs funny
• Suspicious vs shady
• Suspicious vs suspect
• Suspicious vs leery
• Suspicious vs mistrustful
• Suspicious vs untrusting
• Suspicious vs wary