Meaning

adjective (of teeth) affected with cavities or decay

originFrom French carieux (“carious”), from carie (“decay (of bone or teeth)”) (from Latin cariēs (“rot, rottenness, corruption”), from careō (“to lack, be deprived of”), from Proto-Italic *kazēō (“to lack”), possibly from Proto-Indo-European *ḱes- (“to cut”).) + French -eux (“-ous”) (from Latin -ōsus (“full of, prone to”), from Old Latin -ōsos, ultimately from Proto-Indo-European *-went-, *-wont- +…

Etymology from Wiktionary, CC BY-SA 3.0