egotistic vs. egoistic

[Torsten]

It just occurred to me that there are two spelling versions of the word egoistic:

egotistic and egoistic

Which one do you prefer?

TOEIC listening, question-response: What's the matter with the air conditioning?

[Jamie (K)]

I use egotistical.

Egoist and egotist appear to mean the same thing, but look at the definitions for egoism and egotism.

egoism
an ethical theory that treats self-interest as the foundation of morality.
• another term for egotism

egotism
the practice of talking and thinking about oneself excessively because of an undue sense of self-importance

(I took these from the Oxford American Dictionary.)

I prefer the variations with the [t].