9 letters · 18 points in Scrabble
originEtymology tree Ancient Greek ὑπόγειος (hupógeios) Latin -ōsus Old French -usbor. Middle English -ous English -ous English hypogeous From Ancient Greek ὑπόγειος (hupógeios) + English -ous.
Etymology from Wiktionary, CC BY-SA 3.0