collision course

English Thesaurus

1. a course of action (following a given idea) that will lead to conflict if it continues unabated (noun.act)

hypernym	:	course, course of action,
definition	:	a mode of action (noun.act)

2. a course of a moving object that will lead to a collision if it continues unchanged (noun.object)

hypernym	:	course, path, track,
definition	:	a line or route along which something travels or moves (noun.object)