Where does “Meregyó” come from?

Meregyó (Hungarian) comes from Hungarian meleg, from Hungarian -get, from Hungarian -et, from Hungarian -é-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “Meregyó”, step by step

Meregyó traces back through two separate lines of ancestry.

via Hungarian meleg

StepLanguageWordMeaning
1Hungarianmelegwarm; hot; heartfelt, cordial, warm
2Hungarian-getMostly added to transitive verbs to form new...
3Hungarian-etAdded to a verb to form a verb with a meaning of...
4Hungarian-é-
5Hungarian-dyour; Used in the second-person singular definite...
6Middle Welsh-nt3rd person plural verb ending

via Hungarian

StepLanguageWordMeaning
1Hungariangood good for something (can be used for)
2Proto-Ugricjomɜgood
Every word from Middle Welsh -ntEvery word from Hungarian -etEvery word from Hungarian -d