We found one dictionary that defines the word good-ass:

General (1 matching dictionary)

1. good-ass: Wiktionary

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