light a fire under

English

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light a fire under

Where it comes from

Referring to a time when, if chimney sweeps were afraid to ascend a chimney, the fire would be lit under them in order to motivate them to climb to the top.

verb lights a fire under · lighting a fire under · lit a fire under

  1. idiomatic, transitive To motivate or encourage (someone) to start sooner or move faster. Let me see if I can light a fire under the waiter to get our order sooner.

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MLA

"light a fire under." Wiktionary, via Micwyn, micwyn.com/word/light%20a%20fire%20under. Accessed 6 Nov. 2026.

APA

light a fire under. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/light%20a%20fire%20under

Chicago

"light a fire under." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/light%20a%20fire%20under.

BibTeX
@misc{light_a_fire_under_2026,
  title = {light a fire under},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/light%20a%20fire%20under},
  urldate = {2026-11-06}
}