There are 11 14-letter words that end with 'nism'.
| abstractionism | antiquarianism |
| associationism | egalitarianism |
| millenarianism | libertarianism |
| obstructionism | servomechanism |
| restrictionism | ultramontanism |
| utilitarianism | |
Note: These 11 14-letter words that end with 'nism' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with anism, onism, inism, enism, rnism, unism, gnism.
6-letter words end with 'nism' (3)