When it comes to synonyms for the word "penalising," there are several options. One common synonym is "punishing," which implies that someone has committed a wrongdoing and deserves some sort of retribution. "Disciplining" is another option, which suggests trying to correct or change someone's behavior through consequences rather than just punishing them. "Sanctioning" is also a synonym for "penalising," as it involves taking action against someone who has violated rules or regulations. Other potential synonyms include "censuring," "condemning," "disapproving," and "deterring." Ultimately, the choice of synonym may depend on the situation and the desired connotation or emphasis.