To cover with a cloak; clothe.To hide; conceal.To cover or conceal; excuse or extenuate; soften or tone down by pleading or urging extenuating circumstances, or by favorable representations: as, to palliate faults or a crime.To reduce in violence; mitigate; lessen or abate: as, to palliate a disease.Eased; mitigated.In zoology, having a pallium; of or pertaining to the Palliata; tectibranchiate.