The word 'timpani' entered English in the late 19th century directly from the Italian plural 'timpani', meaning 'kettledrums'. The Italian term derives from the Latin 'tympanum', which referred to a drum, a timbrel, or the stretched membrane of a drum. This Latin word was itself borrowed from the Greek 'τύμπανον' (týmpanon), meaning 'a drum', which is related to the verb 'τύπτειν' (týptein), 'to strike'. Thus, the term's journey from Greek to Latin to Italian and finally to English consistently preserves its core semantic link to a percussion instrument that is struck.

This word is a loanword from Italian, adopted as a whole lexical unit into English. It is not productively formed from smaller, meaningful English morphemes.