We found 9 dictionaries that define the word get on like a house on fire:

General (4 matching dictionaries)

1. get on like a house on fire: Cambridge Advanced Learner's Dictionary
2. get on like a house on fire: Wiktionary
3. get on like a house on fire: TheFreeDictionary.com

Business (2 matching dictionaries)

4. get on like a house on fire: Legal dictionary
5. get on like a house on fire: Financial dictionary

Computing (1 matching dictionary)

6. get on like a house on fire: Encyclopedia

Medicine (1 matching dictionary)

7. get on like a house on fire: Medical dictionary

Miscellaneous (1 matching dictionary)

8. get on like a house on fire: Idioms

Definitions from Wiktionary (get on like a house on fire) ▸ verb:  (simile) To immediately start a good relationship with someone. Similar: hit it off, hit the ground running, catch fire, hit it up, jump in with both feet, get it on, try it on, set one's hair on fire, get into someone's pants, pile on, more... ▸ Words similar to get on like a house on fire ▸ Usage examples for get on like a house on fire ▸ Idioms related to get on like a house on fire ▸ Wikipedia articles (New!) ▸ Words that often appear near get on like a house on fire ▸ Rhymes of get on like a house on fire ▸ Invented words related to get on like a house on fire