There are 15 9-letter words that start with 'coo'.
| cookbooks | cookeries | cookhouse |
| cookshack | cookshops | cookstove |
| cookwares | cooldowns | coonhound |
| coonskins | cooperage | cooperate |
| cooperies | coopering | cooptions |
Note: These 15 9-letter words that start with 'coo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with cook, coop, cool, cooe, coor, coon, coot, coom, cooc, coof, cooi, coos.
4-letter words start with 'coo' (7)