We found 2 dictionaries that define the word days on end:

General (1 matching dictionary)

1. days on end: Merriam-Webster

Miscellaneous (1 matching dictionary)

2. days on end: Idioms

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