lock up vs lock in

lock up and lock in both are verbs.

Word	Noun	Adjective	Verb	Adverb
lock up	No	No	Yes	No
lock in	No	No	Yes	No

As verbs, lock up and lock in are synonyms defined as:

lock up and lock in: place in a place where something cannot be removed or someone cannot escape

Other synonyms of lock up include lock, lock away, put away, shut away, shut up.

lock up (verb)	lock in (verb)
place in a place where something cannot be removed or someone cannot escape	place in a place where something cannot be removed or someone cannot escape
secure by locking	close with or as if with a tight seal