Let off Definition 1 of 4Pro Tip 1/3Consequence Expectation Use when someone avoids a punishment they might typically receive. She broke the vase but was let off with a warning. Pro Tip 2/3Colloquial Usage Most common in informal conversations and settings. I can't believe he was let off for being late again! Pro Tip 3/3Potential Criticism May imply disagreement with the decision to not punish. He's always let off too easily; it's not fair.