Eat up!

eat up

1. verb To completely finish one's food. A noun or pronoun can be used between "eat" and "up." Kim may be tiny, but she has a big appetite and will eat up anything you put in front of her.
2. verb To bite one excessively, as of insects. A noun or pronoun can be used between "eat" and "up." If you're outside at dusk, the mosquitos will eat you up.
3. verb To take or require a lot of some resource. A noun or pronoun can be used between "eat" and "up." I'm in a poor financial state because my hospital bills have eaten up so much of my money.
4. verb To believe unquestioningly that something is true. A noun or pronoun can be used between "eat" and "up." I told them that I like this stupid school, and they totally ate it up—I guess I'm a pretty good actress.
5. verb To thoroughly enjoy something. A noun or pronoun can be used between "eat" and "up." The baby just eats up everyone's love and affection.
6. verb To continually bother or worry someone. A noun or pronoun can be used between "eat" and "up." The precarious state of my finances has really begun to eat me up. I'm worried that your critical comments have begun to eat Tiffany up—she seems very subdued these days.
7. verb To overwhelm one and/or cause one to fail. A noun or pronoun can be used between "eat" and "up." Our team isn't very good, and I'm worried that the competition at this level will eat us up.
8. expression Start eating! Eat up, kids! The roast is already getting cold.
See also: eat, up

Eat up!

to eat everything; to eat eagerly. (Usually a command to begin eating. Compare this with Drink up!.) Come on, let's eat up and get going. Eat up, you guys, and get back to work!
See also: eat