noun

absence of difficulty or effort.

she gave up smoking with ease

effortlessness,no difficulty,no trouble,no bother,facility,facileness,simplicity,deftness,adroitness,dexterity,proficiency,mastery

verb

make (something unpleasant or intense) less serious or severe.

a huge road-building programme to ease congestion

relieve,alleviate,mitigate,assuage,allay,soothe,soften,palliate,ameliorate,mollify,moderate,tone down,blunt,dull,deaden,numb,take the edge off,lessen,reduce,lighten,diminish