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Colleagues became suspicious when he started acting strangely.
People are often suspicious of strangers.
a suspicious glance/look
Customers noticed a suspicious package by the door.
There's something a bit suspicious about this.
The brothers died in suspicious circumstances.
This is the British English definition of suspicious. View American English definition of suspicious.
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View the pronunciation for suspicious.
the design of buildings or public spaces in a way which discourages people from touching, climbing or sitting on them …
to ask people to vote in order to decide an issue
a situation in which a country's armed forces are physically present in an area of conflict …
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Definition of suspicious from the online English dictionary from Macmillan Publishers Limited.