Where does “ékük” come from?

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

Ancestry of “ékük”, step by step

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