outsized vs outsize

outsized is not a noun while outsize is a noun.

Word	Noun	Adjective	Verb	Adverb
outsized	No	Yes	No	No
outsize	Yes	Yes	No	No

As adjectives, outsized and outsize are synonyms defined as:

Other synonyms of outsized include oversize, oversized.

outsized (noun)	outsize (noun)
	an unusual garment size (especially one that is very large)

outsized (adjective)	outsize (adjective)
larger than normal for its kind	larger than normal for its kind