Where does “Idaeus” come from?

Idaeus (English) comes from Latin Idaeus, from Ancient Greek Ἰδαῖος, from Ancient Greek -αῖος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Idaeus”, step by step

StepLanguageWordMeaning
1LatinIdaeusIdaean
2Ancient GreekἸδαῖοςIdaean (of, from or pertaining to Mount Ida)
3Ancient Greek-αῖοςSuffix added to nouns or adjectives, forming adjectives: pertaining to, belonging to ("of")
4Ancient Greek-ῐοςbelonging to; of”, “belonging to”, “pertaining to
5Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yósEvery word from Ancient Greek -ῐοςEvery word from Ancient Greek -αῖος