Describing someone who is self-centered and self-important, or showing the characteristics of an egotist.
From egotist plus the adjectival suffix -ic. This forms an adjective to describe people or behaviors that display egotism rather than using the noun form.
Egotistic and egotistical are basically the same thing, but egotistic sounds slightly more technical, while egotistical sounds more conversational—both describe that personality that's all about themselves.
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