spiffed up vs spruced up

spiffed up and spruced up both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spiffed up	No	Yes	No	No
spruced up	No	Yes	No	No

As adjectives, spiffed up and spruced up are synonyms defined as:

Other synonyms of spiffed up include dolled up, dressed-up, dressed, dressed to kill, dressed to the nines, togged up.

spiffed up (adjective)	spruced up (adjective)
dressed in fancy or formal clothing	dressed in fancy or formal clothing