There are 14 words that end with 'mness'.
| dimness | calmness |
| glumness | grimness |
| firmness | slimness |
| primness | trimness |
| warmness | buxomness |
| randomness | uniformness |
| lukewarmness | nonrandomness |
Note: These 14 words that end with 'mness' are found from the USA & Canada version of the tournament Scrabble word list.