verb
To relieve the symptoms of; to ameliorate.
(obsolete) To hide or disguise.
(figurative) To cover or disguise the seriousness of (a mistake, offence etc.) by excuses and apologies.
(obsolete) To lessen the severity of; to extenuate, moderate, qualify.
To placate or mollify.
(obsolete) past participle of palliate (all senses)
adjective
Hidden, concealed.
(medicine, rare) (of a cure) superficial or temporary.