We found 4 dictionaries that define the word as keen as mustard:

General (2 matching dictionaries)

1. as keen as mustard: Merriam-Webster
2. as keen as mustard: TheFreeDictionary.com

Business (1 matching dictionary)

3. as keen as mustard: Legal dictionary

Miscellaneous (1 matching dictionary)

4. as keen as mustard: Idioms

▸ Words similar to as keen as mustard ▸ Usage examples for as keen as mustard ▸ Idioms related to as keen as mustard ▸ Wikipedia articles (New!) ▸ Words that often appear near as keen as mustard ▸ Rhymes of as keen as mustard ▸ Invented words related to as keen as mustard