IPA: /ˌæn.tiˈsoʊ.ʃə.li/
KK: /ˌæntiˈsoʊʃəli/
In a way that shows a lack of interest in socializing or interacting with others.
He antisocially avoided all the parties and gatherings this year.
Antisocially → It is formed from "anti-" (meaning against) and "socialis" (from Latin, meaning social or pertaining to society) and the suffix "-ly" (meaning in a manner). The word "antisocially" means in a manner that is against social interaction or society.
Think of 'against' ('anti-') social behavior ('socialis') to remember that 'antisocially' describes actions that go against social interaction.