55%RatingSave Gender Masculine Usage Croatian, Serbian Scripts Недељко(Serbian) Pronounced Pron. NEH-dehl-ko [key·IPA] Meaning & History Derived from Croatian nedjelja and Serbian недеља (nedelja) meaning "Sunday". Related NamesFamily Tree·Details VariantsNediljko, Nedjeljko(Croatian) Feminine FormsNedeljka, Nediljka, Nedjeljka(Croatian) Nedeljka(Serbian) Other Languages & CulturesNedelcho, Nedyalko(Bulgarian) Nedelko(Macedonian) Categories days of the week