hijo
/ˈixo/ · A1 · noun · m
child
👦 Latin filius (as in filial) → hijo: f became silent h, li became j
Spanish regularly turned Latin initial f into silent h (facere → hacer, farina → harina) and -li- into j (folia → hoja, mulier → mujer). So filius → hijo: the same root as English filial and affiliate. Say it EE-kho.