sissyish vs sissy

sissyish is not a noun while sissy is a noun.

Word	Noun	Adjective	Verb	Adverb
sissyish	No	Yes	No	No
sissy	Yes	Yes	No	No

As adjectives, sissyish and sissy are synonyms defined as:

Other synonyms of sissyish include cissy, effeminate, emasculate, epicene, sissified.

sissyish (noun)	sissy (noun)
	a timid man or boy considered childish or unassertive

sissyish (adjective)	sissy (adjective)
having unsuitable feminine qualities	having unsuitable feminine qualities