mulligan

This term originates from the specific etiquette of casual golf, where a player is permitted to replay a poor shot without penalty. It carries a strong connotation of informality and leniency, implying that the rules are being relaxed for the sake of enjoyment or kindness rather than strict adherence to a code.

When used outside of sports, it functions as a colloquial metaphor for a "do-over." It is typically used in low-stakes or interpersonal situations. Using this term in a highly formal legal or corporate environment would be out of place, as it suggests a casual agreement to ignore a failure rather than a formal appeal or official revision.