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

The four-man crew of the CB-90 patrol boat traversing Odesa Bay is on the lookout for the sea mines, sea drones, and Shahed aerial drones that Russia regularly sends toward this Black Sea port city. — Howard Lafranchi, Christian Science Monitor, 13 July 2026

Investors are on the lookout for any signs of cracks in the AI rally that could turn into larger spills. — John Towfighi, CNN Money, 9 July 2026

Ornithologists and birders have been on the lookout for evidence that the birds have begun breeding once again in the United States. — Matthew Wills, JSTOR Daily, 6 July 2026

In a Facebook post last Friday, Garden City Mayor Bill Jacobs shared a photo from a neighbor of a snapping turtle and called on residents to be on the lookout for these giants. — Hannah Smith july 1, Idaho Statesman, 1 July 2026