We found one dictionary that defines the word ultravigilant:

General (1 matching dictionary)

1. ultravigilant: Wiktionary

Definitions from Wiktionary (ultravigilant) ▸ adjective:  Very vigilant. ▸ Words similar to ultravigilant ▸ Usage examples for ultravigilant ▸ Idioms related to ultravigilant ▸ Wikipedia articles (New!) ▸ Popular nouns described by ultravigilant ▸ Words that often appear near ultravigilant ▸ Rhymes of ultravigilant ▸ Invented words related to ultravigilant