on a collision course
phrase
: moving so as to crash into each other if one or the other does not change direction
—often + with
—often used figuratively
The two airplanes were on a collision course.
The comet was on a collision course with the planet.
The government's policies are putting us on a collision course with economic disaster.
Cite this Entry
“On a collision course.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/on%20a%20collision%20course. Accessed 27 Apr. 2026.
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