1
to be contrary (to);to go against;to run counter (to);to contradict;to be opposite (to)
お金を借りる事は私の主義に反する。
It is against my principles to borrow money.
2
to infringe;to violate;to transgress
3
to disobey (an order, teachings, etc.);to defy;to rebel;to revolt
also written as 叛する
Other forms
叛する 【はんする】 (search-only kanji form)