There are 608 12-letter words that end with 'ses'.
Note: These 608 12-letter words that end with 'ses' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with sses, ises, uses, oses, ases, eses, rses, yses, nses, pses, lses, wses, tses, dses, hses, kses.
4-letter words end with 'ses' (3)