noun
organized crime; antisocial forces
Colloquial abbreviation of 反社会的勢力, used especially in news and business contexts to refer to organized crime groups or antisocial elements.
See also: 反社会的勢力
企業は反社との関係を断つべきだ。
Companies should cut ties with organized crime.
反社チェックは取引先の審査で重要だ。
Checking for antisocial forces is important when vetting business partners.