8 letters · 19 points in Scrabble
noun having more than one spouse at a time
originRecorded since 1591, from Late Latin polygamia, from Ancient Greek πολυγαμία (polugamía), itself from πολύγαμος (polúgamos, “married to many”), from πολύς (polús, “many”) + γάμος (gámos, “marriage”). Relates to modern prefix and suffix poly- + -gamy.
Etymology from Wiktionary, CC BY-SA 3.0