fire under
*fire under someone
Fig. something that makes someone start doing something. (*Typically: build ~; light ~; start ~.) The teacher built a fire under the students, and they really started working. You had better light a fire under your staff. Either that or we will lay off some of them.
See also: fire
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
- (someone or something) promises well
- a fast talker
- a/the feel of (something)
- (I) wouldn't (do something) if I were you
- (have) got something going (with someone)
- a straw will show which way the wind blows
- accompanied by
- accompanied by (someone or something)
- accompany
- a crack at (someone or something)