keep a lookout

Monitor for danger

To keep a lookout is to watch attentively for something, especially danger or opportunity: Keep a lookout for police while I change this tire.

The phrase implies sustained vigilance rather than a casual glance.

Someone keeping a lookout serves as a sentinel, whether literally watching for approaching threats or figuratively staying alert to possibilities: I'm keeping a lookout for cheap flights to Rome.

Related

stay alert · heads up · scrutiny · observation · alertness · search · patrol · minaret · detect · warn · watch your back · scan · attentiveness · monitoring · early warning · oversee · guard · probe

Opposites
attentiveness

keep a lookouttune out

Deliberately stop attending

zone out · let one's guard down · daydream · space out · look away

awareness of threat/opportunity

keep a lookoutdrop one's guard

Cease being defensive

caution/preparedness

keep a lookoutlet one's guard down

Cease being defensive

throw caution to the wind · rest on one's laurels

Family

keep, keeper, keepers, keeping, keeps, kept, upkeep, gatekeeper, goalkeeper

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G