12 letters · 18 points in Scrabble
originFrom steatopyga, steatopygia + -ous. Steatopyga is borrowed from New Latin steatopyga, from Ancient Greek στέᾱτος (stéātos) (genitive singular of στέαρ (stéar, “hard fat, suet, tallow”)) + πῡγή (pūgḗ, “buttocks, rump”).
Etymology from Wiktionary, CC BY-SA 3.0