We found 3 dictionaries that define the word on a promise:

General (1 matching dictionary)

1. on a promise: Wiktionary

Slang (2 matching dictionaries)

2. on a promise: English slang and colloquialisms used in the United Kingdom
3. on a promise: Urban Dictionary

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