palliate

这种药膏可以缓解瘙痒，但不能根治皮肤问题。

This ointment can ___palliate the itching but won't cure the skin condition.

他试图用借口来掩饰自己的错误行为。

He tried to ___palliate his misconduct with excuses.

护士在手术前试图用平静的安慰来缓解病人的焦虑。

The nurse tried to ___palliate the patient's anxiety with calm reassurance before the procedure.