From Wiktionary, the free dictionary
melys (“sweet”) + -yn (diminutive suffix).
melysyn m (plural melysion)
- sweetie, diminutive of melys (“sweet”)
- Synonyms: da-da, fferins, losinen, minceg, pethau da
Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.