society > morality > duty or obligation > moral or legal constraint > immunity or exemption from liability > excuse > excuse (a person or fault) [verb (transitive)] > allege in excuse (2)
transitive. To offer an apology for. To seek to extenuate or remove the blame of (an acknowledged fault). †Also rarely with sentence as object.
transitive. To plead or allege in excuse or defence; to raise as a plea. Obsolete.