egoistical vs egoistic

egoistical and egoistic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
egoistical	No	Yes	No	No
egoistic	No	Yes	No	No

As adjectives, egoistical and egoistic are synonyms defined as:

egoistical and egoistic: concerned chiefly or only with yourself and your advantage to the exclusion of others

Other synonyms of egoistical include egocentric, self-centered, self-centred, self-seeking, self-serving, selfish.

egoistical (adjective)	egoistic (adjective)
concerned chiefly or only with yourself and your advantage to the exclusion of others	concerned chiefly or only with yourself and your advantage to the exclusion of others