Languages › French Learn a French Word a Day: Dégueulasse Share Flipboard Email Print Smith Collection / Getty Images French Vocabulary Pronunciation & Conversation Grammar Resources For Teachers By ThoughtCo Updated August 06, 2018 Dégueulasse (familiar adj): lousy, rotten, filthy, disgusting Pronunciation: [day goo lahs] Examples Ce film est dégueulasse ! / This movie is disgusting! C'est dégueulasse de voler aux enfants. / It's rotten/disgusting to steal from kids.Apocope: dégueu Related Phrases and Usage un/e dégueulasse (fam) / dirty pig, disgusting person dégueulasser (fam) / to muck/up Several people have suggested that this word should be avoided, but it is important to teach French as it is actually spoken—not just how some think it should be spoken. The notation "familiar adj," above, indicates this word's register; if you don't know what that means, please see the lesson on register.