eat (something) up
idiomDefinition of eat (something) up
1
: to eat all of (something)
Eat your dinner up before it gets cold.
2
: to use up (time, resources, etc.)
This project has been eating up a large part of the budget. Your savings may be eaten up by inflation.
3
informal
: to enjoy (something) greatly
I thought the speech was stupid, but the audience ate it up.