Synonyms of be on the lookout for

be on the lookout for

phrase

variants or keep a lookout for

as in watch out (for)

to be cautious of or on guard against

After the storm, the police told the public to be on the lookout for downed power lines.

The public should remain vigilant and keep a lookout for any suspicious activity.

Synonyms & Similar Words

• watch out (for)
• guard (against)
• beware (of)
• look out (for)
• watch
• notice
• mind
• ware
• observe
• note
• attend
• heed
• keep one's eyes open (for)
• mark
• see
• perceive
• behold
• discern

Antonyms & Near Antonyms

• ignore
• discount
• miss
• disregard
• overlook

Example Sentences

Recent Examples of be on the lookout for

In particular, officials are on the lookout for venomous species, although some admittedly fall through the cracks. — John Werner, Forbes.com, 30 Aug. 2026

The state is now warning farmers to be on the lookout for a new version of the pest. — Mirtha Donastorg, AJC.com, 28 Aug. 2026

Now, in Season 2, Issa is on the lookout for signs that her boyfriend is crushing on another housemate, while Anton and Paul Baker keep a watchful eye on one another, as much to quell further flirtation as to savor it. — Ben Travers, IndieWire, 27 Aug. 2026

Police will be on the lookout for drivers who are speeding, distracted, and those failing to stop for pedestrians. — Michelle Richardson, CBS News, 24 Aug. 2026