on a collision course

idiom

: moving so as to crash into each other if one or the other does not change direction

The two airplanes were on a collision course.

—often + with

The comet was on a collision course with the planet.

—often used figuratively

The government's policies are putting us on a collision course with economic disaster.

Examples of on a collision course in a Sentence

Recent Examples on the Web

The incident that put Los Angeles police Capt. Silvia Sanchez on a collision course with the union for more than 8,000 rank-and-file cops began with a 911 call about a fight on the city’s Eastside. —Libor Jany, Los Angeles Times, 1 Feb. 2025

This isn't the first time an iceberg has been on a collision course with the island. —Erik Klemetti, Discover Magazine, 28 Jan. 2025

Of course, the collision never occurred, the world didn't end in 2012 and no astronomer has ever found a planet on a collision course with Earth. —Ailsa Harvey, Space.com, 17 Jan. 2025

Donald Trump has reiterated his wish for the U.S. to acquire Greenland, a territory within the kingdom of founding member Denmark, putting the president-elect on a collision course with an ally, as well as the . —Brendan Cole, Newsweek, 8 Jan. 2025