Kudos entered English in the late 19th century from the Greek kydos, meaning "glory" or "fame."
Praise or acclaim for an achievement.
From Greek "κῦδος" (kŷdos), meaning "glory, fame, renown," used in Homeric Greek to describe the divine glory bestowed upon warriors by the gods. The word traces to PIE *ḱewd- (glory, fame), related to the concept of hearing or being heard, connecting to PIE *ḱlew- (to hear) in some analyses. Borrowed directly into English from Greek in the 18th century, initially in British university slang at Oxford and Cambridge. The word is properly a singular mass noun