light a fire under
Related to light a fire under: alight
light a fire under (someone or something)
To motivate someone or something to take action. The deadline really lit a fire under us—we never would have gotten all that work done otherwise. Something must have lit a fire under Jenna—she has really started taking her schoolwork seriously.
See also: fire, light
Farlex Dictionary of Idioms.
light a fire under
Also, build a fire under. Urge or goad to action, as in If we don't light a fire under that committee, they'll never do any work. This hyperbolic colloquialism uses light in the sense of "ignite," a usage dating from the mid-1100s.
See also: fire, light
The American Heritage® Dictionary of Idioms by Christine Ammer.
light a fire under
To urge or move to action.
See also: fire, light
American Heritage® Dictionary of the English Language, Fifth Edition.
- light a fire under (someone or something)
- light a fire under someone
- start a fire under (someone or something)
- build a fire under (someone or something)
- a fire under (someone or something)
- draw a bead on (someone), to
- keep after
- keep after (someone or something)
- put a bomb under
- put a bomb under (someone or something)