There are 9 words that end with 'inths'.
| ninths | plinths |
| absinths | jacinths |
| helminths | hyacinths |
| labyrinths | terebinths |
| platyhelminths | |
Note: These 9 words that end with 'inths' are found from the USA & Canada version of the tournament Scrabble word list.