shut vs shut up

shut and shut up both are adjectives.

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

shut (adjective)	shut up (adjective)
not open	closely confined
used especially of mouth or eyes

shut (verb)	shut up (verb)
move so that an opening or passage is obstructed; make shut	cause to be quiet or not talk
become closed	refuse to talk or stop talking; fall silent
prevent from entering; shut out	place in a place where something cannot be removed or someone cannot escape