Penalise is a term used to describe the act of punishing someone for an offence. PUNISH, MULCT, FINE, AMERCE and DISCIPLINE are all words that can be used to describe this action. PUNISH is a six-letter word meaning to inflict a penalty or punishment on someone for an offence. MULCT is a five-letter word meaning to impose a FINE or penalty on someone. FINE is a four-letter word meaning to impose a financial penalty on someone. AMERCE is a six-letter word meaning to impose a penalty or FINE on someone. DISCIPLINE is a ten-letter word meaning to PUNISH someone in order to correct their behaviour. All of these words can be used to describe the act of penalising someone for an offence.