dulcorate
Dulcorate (verb) means to make something sweeter, in a real or figurative sense.
Etymology
First attested in the beginning of the 15th century, in Middle English; inherited from Middle English dulcoraten, from dulcorat(e) (“sweetened”, used as the past participle of dulcoraten) + -en (verb-forming suffix), borrowed from Latin dulcōrātus, perfect passive participle of dulcōrō (“to sweeten”), see -ate (verb-forming suffix).