We found 2 dictionaries that define the word flat-earthist:

General (2 matching dictionaries)

1. flat-earthist: Merriam-Webster
2. flat-earthist: Wiktionary

Definitions from Wiktionary (flat-earthist) ▸ noun:  Synonym of flat-earther. ▸ Words similar to flat-earthist ▸ Usage examples for flat-earthist ▸ Idioms related to flat-earthist ▸ Wikipedia articles (New!) ▸ Popular adjectives describing flat-earthist ▸ Words that often appear near flat-earthist ▸ Rhymes of flat-earthist ▸ Invented words related to flat-earthist