“eat up” can have different meanings depending on the context, so the French translation will vary: 1. Literally: to eat everything (finish food) Mange tout ! / Finis ton assiette ! 👉 Said to children when you want them to finish their meal. E.g. Come on, eat up before it gets cold! ➡️ Allez, mange tout avant que ça ne refroidisse ! 2. To consume something completely Dévorer (when talking about eating eagerly). E.g. He ate up the cake in no time. ➡️ Il a dévoré le gâteau en un rien de temps. 3. Figurative: to use up / take completely Accaparer / engloutir / absorber E.g. The repairs ate up all my savings. ➡️ Les réparations ont englouti toutes mes économies. 4. Figurative: to be absorbed / fascinated Être captivé par / boire les paroles E.g. The audience ate up every word of his speech. ➡️ Le public a bu ses paroles. ✅ So, depending on what you mean by "eat up," the right translation could be: Mange tout (finish food) Dévorer (eat eagerly) Engloutir / accaparer (consume resources) Boire les paroles / être captivé (figurative fascination)