on the lookout
Keeping eyes open
On the lookout means watchfully searching or staying alert for something.
You might be on the lookout for a good deal, a missing pet, or signs of trouble: Police are on the lookout for the suspect.
The phrase implies active vigilance rather than passive waiting—eyes scanning, attention focused.
- observantNoticing things readily
- alertWarning or watchfulness
- keeping watchMaintaining vigilant observation
- scanningSystematic visual examination
- eagle-eyedExceptionally sharp of vision
vigilant · attentive · guard duty · wary · anticipatory · suspicious · stakeout · private eye · sentry · watch your back · hawk-eyed · reconnaissance · surveying · cautious · perceptive · sharp-eyed · keep an eye out · monitoring
on the lookoutoblivious
Lacking any awareness
unaware · inattentive · heedless · unmindful · zoned out
on the lookoutcaught off guard
Surprised when unprepared
unprepared · taken by surprise · blindsided · caught napping · unsuspecting
look, looks, looking, lookout, watchful, looked, watcher, look out, looker