There are 18 words that start with 'worth'.
| worth | worths |
| worthy | worthed |
| worthful | worthier |
| worthies | worthily |
| worthing | worthiest |
| worthless | worthiness |
| worthwhile | worthlessly |
| worthinesses | worthlessness |
| worthwhileness | worthlessnesses |
Note: These 18 words that start with 'worth' are found from the USA & Canada version of the tournament Scrabble word list.