There are 37 15-letter words that end with 'ating'.
Note: These 37 15-letter words that end with 'ating' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with rating, lating, nating, cating, iating, tating, eating, gating, dating, uating, mating, vating, oating, bating, pating, sating, hating, fating, kating, xating.
6-letter words end with 'ating' (9)