suspicious

/səspˈɪʃəs/

/səˈspɪʃəs/

suspicious

doubtful about the honesty of what someone has done and having no trust in them

synonyms : leery

not conforming to the expected or usual pattern, giving rise to doubt or concern

synonyms : fishy

Examples

1. He gave me a suspicious look.

2. I called the police hotline to report a suspicious activity.

3. The security guard watched the surveillance footage, looking for any suspicious activity.

4. The wife, probably already suspicious of her husband, then follows the couple and catches them red-handed.