There are 12 words that end with 'opism'.
| tropism | utopism |
| atropism | geotropism |
| malapropism | anisotropism |
| chemotropism | heliotropism |
| hydrotropism | phototropism |
| thermotropism | thigmotropism |
Note: These 12 words that end with 'opism' are found from the USA & Canada version of the tournament Scrabble word list.