suspicious activity
Something seems off
Suspicious activity is behavior that seems to suggest wrongdoing or criminal intent—loitering near secured areas, photographing infrastructure, or making unusual inquiries.
The phrase appears frequently in security contexts and public awareness campaigns: If you see suspicious activity, report it to authorities.
What counts as suspicious is subjective and has drawn criticism for encouraging racial profiling.
- shadyDisreputable or sun-blocked
- dark alleyUnlit narrow passage
- lurkingConcealed and watchful
- surveillanceSystematic observation of subjects
- security cameraMounted recording device
watchful · prowler · stakeout · undercover · stalking · snooping · furtive · creeping · shadowy · eyewitness · alert · tipoff · paranoid · loitering · see something say something · neighborhood watch · trespassing · casing
- dangersdanger, peril, hazard, risk, menace
- Neighborhood Watchneighborhood watch, citizen patrol, patrol, block captain, coordinator
- fraud detectionscam, phishing, identity theft, credit card fraud, insurance fraud
- payment securityfraud detection, fraud prevention, anti-fraud, fraud protection, secure payment
- police beatcrime report, arrest record, traffic stop, burglary, theft
- Security Trainingphishing, passwords, lockdown drills, access control, threat assessment
suspicious, suspiciously, suspiciousness, suspect, suspected, suspecting, suspects, suspicion, suspicions