There are 27 12-letter words that end with 'lism'.
Note: These 27 12-letter words that end with 'lism' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with alism, olism, ilism, elism, llism, ulism, plism, ylism.
6-letter words end with 'lism' (1)