There are 12 words that start with 'deth'.
| dethatch | dethrone | 
| dethroned | dethroner | 
| dethrones | dethatched | 
| dethatches | dethroners | 
| dethroning | dethatching | 
| dethronement | dethronements | 
Note: These 12 words that start with 'deth' are found from the USA & Canada version of the tournament Scrabble word list.