Neacail is of greek origin. A neacail is not an intellectually capable person but this person will always end up winning therefore he would have a big ego as a result.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.