Apologize/əˈpɑːlədʒaɪz/ Definition 1 of 2Pro Tip 1/3Expressing Regret Use 'apologize' to show genuine remorse for actions that may have hurt others. I apologize for misunderstanding your intentions. Pro Tip 2/3Taking Responsibility When apologizing, acknowledge your mistake without excuses to demonstrate accountability. I apologize for losing your book; it was my fault. Pro Tip 3/3Social Politeness Using 'apologize' can be a polite way to address minor inconveniences in social situations. I apologize for the delay in starting the meeting.