Antisocial and Clammed up

Antisocial adjective - Having or showing a lack of friendliness or interest in others.

Clammed up and antisocial are semantically related In some cases you can use "Clammed up" instead an adjective "Antisocial".

Antisocial and clammed up are semantically related in taciturn topic. Sometimes you can use "Antisocial" instead an adjective "Clammed up", if it concerns topics such as uncommunicative.