There are 10 9-letter words that start with 'cow'.
| cowardice | cowboying | cowfishes | 
| cowhiding | cowinners | cowlstaff | 
| coworkers | cowriters | cowriting | 
| cowritten | ||
Note: These 10 9-letter words that start with 'cow' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with cowb, cowp, cowh, cowl, cowr, cowa, cows, cowe, cowf, cowi, cowc, cowg, cowm, cowo, cowy.
4-letter words start with 'cow' (3)