Romanian word compliment comes from Latin instrumentum, Latin complere, and later Latin complementum (Complement (that which fills up or completes).)

Detailed word origin of compliment

Dictionary entry	Language	Definition
instrumentum	Latin (lat)	(collective) supply, provision. (general) paraphernalia, equipment. An instrument, tool, utensil. Records, documents.
complere	Latin (lat)
complementum	Latin (lat)	Complement (that which fills up or completes).
compliment	Romanian (ron)

Words with the same origin as compliment