There are 104 13-letter words that end with 'zing'.
Note: These 104 13-letter words that end with 'zing' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with izing, azing, ezing, yzing, tzing, ozing, zzing, uzing, dzing, nzing.
6-letter words end with 'zing' (12)