Where does “mérgük” come from?

mérgük (Hungarian) comes from Hungarian -ük, from Proto-Germanic -ukaz — Forms diminutive nouns.

Ancestry of “mérgük”, step by step

StepLanguageWordMeaning
1Hungarian-üktheir
2Proto-Germanic-ukazForms diminutive nouns
Every word from Proto-Germanic -ukaz →Every word from Hungarian -ük →