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

In a Facebook post on Saturday, March 29, the Monroe County Sheriff's Office in Georgia advised residents near Oxford Road and Abercrombie Road to be on the lookout for Shirley Obert. —Ingrid Vasquez, People.com, 1 Apr. 2025

Authorities were on the lookout for someone who could be over six-feet-four-inches tall and drove a Chevy Avalanche. —Olivia B. Waxman, Time, 31 Mar. 2025

Police will be on the lookout for drunk drivers in the Sacramento area. —Veronica Fernandez-Alvarado, Sacramento Bee, 12 Mar. 2025

As the 2025 Oscars air on Sunday, be on the lookout for the history that could be made by a few nominees. —Vivian Kwarm, New York Daily News, 27 Feb. 2025

Rhymes for be on the lookout for

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