There are 12 words that start with 'calumn'.
| calumny | calumnies |
| calumniate | calumnious |
| calumniated | calumniates |
| calumniator | calumniating |
| calumniation | calumniators |
| calumniously | calumniations |
Note: These 12 words that start with 'calumn' are found from the USA & Canada version of the tournament Scrabble word list.