Excuse  —v. (-sing) 1 try to lessen the blame attaching to (a person, act, or fault). 2 (of a fact) serve as a reason to judge (a person or act) less severely. 3 (often foll. By from) release (a person) from a duty etc. 4 forgive (a fault or offence). 5 (foll. By for) forgive (a person) for (a fault). 6 refl. Leave with apologies. —n. 1 reason put forward to mitigate or justify an offence. 2 apology (made my excuses).  be excused be allowed to leave the room etc. Or be absent. Excuse me polite preface to an interruption etc., or to disagreeing.  excusable adj. [latin causa accusation]