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

Detectives had been on the lookout for the source of deliveries like phones and cigarettes following roughly 10 predawn drops in two weeks. —Brian Niemietz, New York Daily News, 24 May 2025

Tasters were on the lookout for balanced flavors of citrus, sweetness, earth, smoke and vegetal notes. —Sam Stone, Bon Appetit Magazine, 13 May 2025

With the summer travel season quickly approaching, travelers may be on the lookout for tips and tricks to help things go smoothly. —Michael Cappetta, Travel + Leisure, 25 Apr. 2025

Law enforcement officers will be on the lookout for drunk drivers in the Sacramento region. —Sarah Linn, Sacbee.com, 9 May 2025

Rhymes for be on the lookout for

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