We found 12 dictionaries that define the word on the alert:

General (10 matching dictionaries)

1. on the alert: Merriam-Webster
2. on the alert: Oxford Learner's Dictionaries
3. on the alert: Collins English Dictionary
4. on the alert: Wordnik
5. on the alert: Wiktionary
6. On the alert, on the alert: Dictionary.com
7. on the alert: FreeDictionary.org
8. On the alert: TheFreeDictionary.com

Business (1 matching dictionary)

9. on the alert: Legal dictionary

Miscellaneous (1 matching dictionary)

10. on the alert: Idioms

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