What does dulce mean in Latin?

dulce, a adverb, means “synonym of dulciter: sweetly, agreeably, delightfully”.

How do you pronounce dulce?

In classical Latin, [ˈdʊɫ.kɛ]; in ecclesiastical (church) Latin, [ˈdul̠ʲ.t͡ʃe].

adverb

dulce (comparative dulcius, superlative dulcissimē, adjective dulcis)

Classical[ˈdʊɫ.kɛ]Ecclesiastical[ˈdul̠ʲ.t͡ʃe]

synonym of dulciter: sweetly, agreeably, delightfully
Ille mi par esse deo videtur, / ille, si fas est, superare divos, / qui sedens adversus identidem te / spectat et audit // dulce ridentem, misero quod omnes / eripit sensus mihi: nam simul te, / Lesbia, aspexi, nihil est super mi / // lingua sed torpet, tenuis sub artus / flamma demanat, sonitu suopte / tintinant aures, gemina teguntur / lumina nocte.He seems to me to be equal to a god, / he, if it is permissible, / seems to surpass the gods, / who sitting opposite again and again / watches and hears you // sweetly laughing, which rips out all senses / from miserable me: for at the same moment I look upon you, / Lesbia, nothing is left for me / // But my tongue grows / thick, a thin flame / runs down beneath my limbs, with their own sound / my ears ring, my lights (eyes) / are covered by twin night.c. 70 BCE, Gaius Valerius Catullus, Codex Vaticanus Ottobonianus Latinus 1829 Carmina 51
tanta mentis perturbatione sedata, dulce conquievit.with so great a disturbance of mind having been calmed, she rested pleasantly.c. 125 CE – 180 CE, Apuleius, Metamorphoses 5.1

dulce, adv.,

I. sweetly, pleasantly, v. dulcis, fin.

(b). .