Someone who has had a negative or positive life-changing experience that changes their attitude, way of thought, values, morals, and overall way of thinking. normally, a series of extremely positive experiences will lead to a positive change in personality, whilst a series of extremely negative experiences will lead to a negative change in personality.

people may often overlook or never consider an aboral's past, and base their interactions on the aborial's current personality. these interactions will boost an aboral's change in thought.

a positive aborial will continue having positive experiences in life due to how people interact with them, which leads to an increasingly positive attitude. a negative aborial will have negative experiences due to how people choose to treat them, which in response, makes their attitude increasingly negative.
Jason is actually an aborial, he wasn't always positive, he actually used to be a huge downer

Dude, leave dallas alone, he is an aborial, you're only making things worse for him!
by LookAtDisDuuuuuuuuude December 10, 2017
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