jolly up vs cheer up

jolly up and cheer up both are verbs.

Word	Noun	Adjective	Verb	Adverb
jolly up	No	No	Yes	No
cheer up	No	No	Yes	No

As verbs, jolly up and cheer up are synonyms defined as:

jolly up and cheer up: cause (somebody) to feel happier or more cheerful

Other synonyms of jolly up include cheer, jolly along.

jolly up (verb)	cheer up (verb)
cause (somebody) to feel happier or more cheerful	become cheerful
	cause (somebody) to feel happier or more cheerful