fatted adjective 1forms 2phrases 1 adjective1 •Made fat; fattened.31 March (1474) Jacobus de Cessolis, (fl. 1288-1322) The Game and Playe of the Chesse (De ludo scachorum), William Caxton and Colard Mansion Bruges. For whan they were hongry they knewe god / And whan theyre belyes were fylde & fatted / they forgid ydoles & were ydolatrers formsmore fatted · most fatted Phrases with fatted kill the fatted calfTo begin a festive celebration and rejoice for someone's long-awaited return.