My doubt with an article preceding an adverb.

English as a Second Language English Vocabulary, Grammar and Idioms
1

They were a completely irreligious family and I never thought that one day I would marry one of their daughters.

Why the article was not positioned before the IRRELIGIOUS, Iike the following:

  • ‘They were completely ‘an’ irreligious family…’ . I learned an article must always precede an adjective that talks about the noun, but not an ADVERB! like completely above.

Please explain to me if I am wrong.

2

Duplicate of english-test.net/forum/ftopi … _an_adverb

Ebenezer, are you any closer to figuring out how you accidentally make so many duplicate posts?