Synonyms for Dulcify:

n.

calm, appease, conciliate, pour oil on troubled water, assuage, propitiate, soften, gentle, placate, soothe, pacify, mollify. dulcify (noun)
edulcorate, sweeten, dulcorate.

v.

pacify (verb)
calm, appease, conciliate, sweeten, assuage, propitiate, soften, dulcorate, placate, soothe, mollify, gentle.
perception (verb)
edulcorate, sweeten, dulcorate.

Other synonyms:

placate, propitiate, conciliate. mollify, pacify, soothe, appease. soften, assuage. soothe
soothe.
Other relevant words:
calm, appease, conciliate, pour oil on troubled water, assuage, propitiate, soften, gentle, placate, soothe, pacify, mollify.