There are 11 words that start with 'canth'.
| canthi | canthal |
| canthus | cantharis |
| canthitis | cantharides |
| cantharidin | canthitises |
| cantharidins | canthaxanthin |
| canthaxanthins | |
Note: These 11 words that start with 'canth' are found from the USA & Canada version of the tournament Scrabble word list.