slap-up vs bully

slap-up is not a noun while bully is a noun.

Word	Noun	Adjective	Verb	Adverb
slap-up	No	Yes	No	No
bully	Yes	Yes	Yes	No

As adjectives, slap-up and bully are synonyms defined as:

Other synonyms of slap-up include bang-up, corking, cracking, dandy, great, groovy, keen, neat, nifty, not bad, old, peachy, smashing, swell.

slap-up (noun)	bully (noun)
	a cruel and brutal fellow
	a hired thug

slap-up (adjective)	bully (adjective)
excellent	excellent

slap-up (verb)	bully (verb)
	discourage or frighten with threats or a domineering manner; intimidate
	be bossy towards