Where does “octogenary” come from?

octogenary (English) comes from French octogénaire, from Latin octogenarius, from Latin Arīus, from Ancient Greek Ἄρειος, from Ancient Greek Ἄρης, from Ancient Greek ἀρή — bane, ruin.

octogenary (English): Of eighty years of age, octogenarian

Definitions

Of eighty years of age, octogenarian

Ancestry of “octogenary”, step by step

Step	Language	Word	Meaning
1	French	octogénaire	octogenarian
2	Latin	octogenarius	eighty; eighty-year-old
3	Latin	Arīus	The main river of Aria, now the Hari (Afghanistan)
4	Ancient Greek	Ἄρειος	devoted to Ares; pertaining to Ares
5	Ancient Greek	Ἄρης	Ares; the planet Mars; {{l\|en\|Ares}}
6	Ancient Greek	ἀρή	bane, ruin

Every word from Ancient Greek ἀρή →Every word from Ancient Greek Ἄρης →Every word from Ancient Greek Ἄρειος →