be suspicious

See: doubt, suspect
References in classic literature ?
This was Fix, one of the detectives who had been dispatched from England in search of the bank robber; it was his task to narrowly watch every passenger who arrived at Suez, and to follow up all who seemed to be suspicious characters, or bore a resemblance to the description of the criminal, which he had received two days before from the police headquarters at London.
Police welcomed the public response to the incident and urged them to continue reporting any behaviour they deem to be suspicious.
She shouldn't be messaging this bloke ever again and if she has a problem with that, you have a right to be suspicious.
An outbreak might be suspicious because epidemiologic features suggest an unnatural origin.
Seminole County Commissioner Daryl McLain told the Orlando Sentinel he had good reason to be suspicious of the group's motives: One of his opponents in the Sept.
Since the disaster, I've received tons of sympathy and tons of advice: * Be suspicious of every attachment.
Other henges without stone settings have relatively little material at them, and we should be suspicious of a universal claim for the formulation stone:ancestors::wood:living.
You're always taught to be suspicious of the record company, but the label you end up knowing the most about is the one you hear the most about from your pops,'' Cohen said.
One should always be suspicious of so-called cutting-edge works of art which could actually have been created any time within the pat seventy-five years.
Know Your Customer" procedures, which are applied to all facets of a banking operation, allow the organization to identify its customers and the transactions that they conduct on a regular basis, be alert to transactions that may be irregular or abnormal for a particular customer, determine whether there is an apparent valid or lawful purpose for the transactions, and report to the appropriate authorities those transactions that appear to be suspicious or criminal in nature.
Be suspicious of anyone calling and claiming to be a local telephone or long-distance company employee.
The key is to figure out if you have a real reason to be suspicious or if it's just your mind playing tricks.