μαστιχάω μαστιχάω, to gnash the teeth Morpho works with a static database. If you like, you can compare the output of Morpheus.No parse information found. Search for this form in Logeion: of μαστιχάω μαστιχάω Present Active participle · Singular Masculine Nominative – Genitive – Dative μαστιχόωντι Accusative – Vocative –