be on the lookout for

idiom

variants or keep a lookout for

: to watch or search for (something or someone) : be alert to

Be on the lookout for flooded roads after heavy rainstorms.

The police officer walked through the neighborhood, keeping a (sharp) lookout for any suspicious activity.

Examples of be on the lookout for in a Sentence

Recent Examples on the Web

The 49ers could also be on the lookout for another Bryce Huff, who underperformed in an ill-fitting scheme in Philadelphia and was acquired for a mid-round draft pick. —Jerry McDonald, Mercury News, 22 Sep. 2025

Police had been on the lookout for Matthew James Ruth, 24, in hope of arresting him on allegations of stalking, prowling and trespassing, according to a criminal complaint filed Wednesday. —David K. Li, NBC news, 18 Sep. 2025

Next, be on the lookout for emotional manipulation. —Jeremy H. Gottschalk, Forbes.com, 15 Sep. 2025

Police will be on the lookout for drunk drivers in the Sacramento area. —Sarah Linn, Sacbee.com, 12 Sep. 2025

Rhymes for be on the lookout for

• abhor
• abor
• adore
• afore
• ardour
• ashore
• backdoor
• before
• bookstore
• candour
• centaur
• claymore