Where does “bitheitic” come from?

bitheitic (Irish) comes from Irish eitic, from Old French ethique, from Latin ēthica, from Late Latin ethica, from Ancient Greek ἠθική, from Ancient Greek ἠθικός, from Ancient Greek ἦθος, from Ancient Greek ἔθος — to do, put, place.

bitheitic (Irish): bioethics

Definitions

bioethics

Ancestry of “bitheitic”, step by step

Step	Language	Word	Meaning
1	Irish	eitic	ethics, ethic
2	Old French	ethique	—
3	Latin	ēthica	—
4	Late Latin	ethica	—
5	Ancient Greek	ἠθική	feminine nominative/vocative singular of ἠθικός
6	Ancient Greek	ἠθικός	of or for morals; moral; expressing character
7	Ancient Greek	ἦθος	character; custom, habit
8	Ancient Greek	ἔθος	habit, custom, manner; disposition, temper;...
9	Proto-Indo-European	swe-dʰh₁-	—
10	Proto-Indo-European	dʰeh₁-	to do, put, place

Every word from Proto-Indo-European dʰeh₁- →Every word from Proto-Indo-European swe-dʰh₁- →Every word from Ancient Greek ἔθος →