eat up vs eat

eat up and eat both are verbs.

Word	Noun	Adjective	Verb	Adverb
eat up	No	No	Yes	No
eat	No	No	Yes	No

As verbs, eat is a hypernym of eat up; that is, eat is a word with a broader meaning than eat up:

As verbs, eat up and eat are synonyms defined as:

Other synonyms of eat up include consume, deplete, exhaust, expend, run through, use, use up, wipe out.

eat up (verb)	eat (verb)
finish eating all the food on one's plate or on the table	cause to deteriorate due to the action of water, air, or an acid
use up (resources or materials)	take in solid food
enclose or envelop completely, as if by swallowing	eat a meal; take a meal
	take in food; used of animals only
	use up (resources or materials)
	worry or cause anxiety in a persistent way