There are 21 words that start with 'dad'.
| dad | dada | dado |
| dads | dadas | daddy |
| dados | daddle | dadgum |
| dadoed | dadoes | dadaism |
| dadaist | daddies | daddled |
| daddles | dadoing | dadaisms |
| dadaists | daddling | dadaistic |
Note: These 21 words that start with 'dad' are found from the USA & Canada version of the tournament Scrabble word list.