Used when someone prefers being alone over interacting with others. After the argument, he was so upset that he became antisocial for weeks.
Pro Tip 2/3
Mood Indicator
Reflects a temporary state; someone could be antisocial due to mood, not personality. He’s usually chatty, but when he's working on his art, he gets a bit antisocial.
Pro Tip 3/3
Negative Assumption
Can imply a judgement - it's seen as negative to not want social interaction. She's not sick; just being antisocial, not answering any calls or texts.