Where does “Ἰουδαϊκῶς” come from?

Ἰουδαϊκῶς (Ancient Greek) comes from Ancient Greek Ἰουδαϊκός, from Ancient Greek -ικός, from Ancient Greek -κός, from Proto-Indo-European -ḱos — -y, -ic.

Ἰουδαϊκῶς (Ancient Greek): In a Judean/Jewish manner

Definitions

In a Judean/Jewish manner

Ancestry of “Ἰουδαϊκῶς”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἰουδαϊκός	Judean, Jewish
2	Ancient Greek	-ικός	of or pertaining to, in the manner of; -ic
3	Ancient Greek	-κός	forms adjectives with the sense of 'of or...
4	Proto-Indo-European	-ḱos	-y, -ic

Every word from Proto-Indo-European -ḱos →Every word from Ancient Greek -ικός →Every word from Ancient Greek -κός →