overeating ove·rea·ting US/ˈoʊvɜrˈitɪŋ/ uncommon noun 1. eating to excess (personified as one of the deadly sins) Synonymsgluttonygula Related words Word family overeat Broader terms mortal sin WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.