collision course
noun
a course or path of a vehicle, projectile, etc., that, if unchanged, will lead to a collision with another object.
any plan, attitude, or course of action that leads to a confrontation or conflict with another.
Origin of collision course
First recorded in 1940–45
Words nearby collision course
collip,
colliquation,
colliquative,
colliquative necrosis,
collision,
collision course,
collision density,
collision diameter,
collision insurance,
collision zone,
collo-