brutish vs beastly

brutish and beastly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
brutish	No	Yes	No	No
beastly	No	Yes	No	Yes

As adjectives, brutish and beastly are synonyms defined as:

brutish and beastly: resembling a beast; showing lack of human sensibility

Other synonyms of brutish include bestial, brutal, brute.

brutish (adjective)	beastly (adjective)
resembling a beast; showing lack of human sensibility	resembling a beast; showing lack of human sensibility
	(informal) very unpleasant

brutish (adverb)	beastly (adverb)
	in a beastly manner