There are 16 words that start with 'calu'.
| calumet | calumny |
| calumets | calutron |
| calumnies | calutrons |
| calumniate | calumnious |
| calumniated | calumniates |
| calumniator | calumniating |
| calumniation | calumniators |
| calumniously | calumniations |
Note: These 16 words that start with 'calu' are found from the USA & Canada version of the tournament Scrabble word list.