We found one dictionary that defines the word to fall back on:

General (1 matching dictionary)

1. to fall back on: FreeDictionary.org

Phrases: reserve to fall back on, more... ▸ Words similar to to fall back on ▸ Usage examples for to fall back on ▸ Idioms related to to fall back on ▸ Wikipedia articles (New!) ▸ Words that often appear near to fall back on ▸ Rhymes of to fall back on ▸ Invented words related to to fall back on