extenuate, palliate, mitigate (verb)

lessen or to try to lessen the seriousness or extent of

"The circumstances extenuate the crime"

relieve, alleviate, palliate, assuage (verb)

provide physical relief, as from pain

"This pill will relieve your headaches"

palliate (Verb)

To relieve the symptoms of; to ameliorate.

palliate (Verb)

To hide or disguise.

palliate (Verb)

To cover or disguise the seriousness of (a mistake, offence etc.) by excuses and apologies.

palliate (Verb)

To lessen the severity of; to extenuate, moderate, qualify.

palliate (Verb)

To placate or mollify.

palliate (Adjective)

Cloaked; hidden, concealed.