English▸ noun [mass noun] the action of abating or being abated; ending or subsiding:
this trend shows no sign of abatement.
▪ Law the reduction or removal of a nuisance:
[as modifier] it was resolved to serve an abatement notice.
– ORIGIN Middle English: from Anglo-Norman French, from Old French abatre ‘fell, put an end to’ (see abate).