There are 13 words that end with 'wths'.
| crwths | rowths | growths |
| trowths | ingrowths | regrowths |
| upgrowths | outgrowths | pregrowths |
| overgrowths | intergrowths | supergrowths |
| undergrowths | ||
Note: These 13 words that end with 'wths' are found from the USA & Canada version of the tournament Scrabble word list.