FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

hades ᾅδης — hah'-dace — from 1 (as negative particle) and 1492; properly, unseen, i.e. "Hades" or the place (state) of departed souls:--grave, hell.

see GREEK for 1

see GREEK for 1492