There are 2 12-letter words that end with 'ace'.
hypersurface | undersurface | |
Note: These 2 12-letter words that end with 'ace' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with lace, face, race, pace, nace, mace, dace, sace, bace, eace, tace, vace.
4-letter words end with 'ace' (7)