We found one dictionary that defines the word antediluvianly:

General (1 matching dictionary)

1. antediluvianly: Wiktionary

Definitions from Wiktionary (antediluvianly) ▸ adverb:  In an antediluvian manner. ▸ Words similar to antediluvianly ▸ Usage examples for antediluvianly ▸ Idioms related to antediluvianly ▸ Wikipedia articles (New!) ▸ Words that often appear near antediluvianly ▸ Rhymes of antediluvianly ▸ Invented words related to antediluvianly