We found 5 dictionaries that define the word light a fire under someone:

General (4 matching dictionaries)

1. light a fire under someone: Merriam-Webster
2. light a fire under someone: Oxford Learner's Dictionaries

Miscellaneous (1 matching dictionary)

3. light a fire under someone: Idioms

▸ Words similar to light a fire under someone ▸ Usage examples for light a fire under someone ▸ Idioms related to light a fire under someone ▸ Wikipedia articles (New!) ▸ Words that often appear near light a fire under someone ▸ Rhymes of light a fire under someone ▸ Invented words related to light a fire under someone