suspicious
Translation
suspicious, questionable
Examples
His behaviour was very suspicious.
His behavior was very suspicious.
The police are suspicious of his motives.
The police are suspicious of his motives.
Grammar Patterns
((to be suspicious)) to seem questionable or dishonest His behavior was very suspicious.
((to be suspicious of sb./sth.)) to feel doubt or a lack of trust in (sb./sth.) They are suspicious of strangers.
Similar Words
Synonyms: doubtful, questionable; Antonyms: trustworthy, innocent
Etymology
From the noun 'suspicion' plus the adjective-forming suffix '-ous' (full of). So, 'full of suspicion'.
Memory Tips
If something is 'suspicious', it makes you feel 'suspicion'.