There are 15 6-letter words that start with 'coa'.
| coacts | coalas | coaled | coaler | coapts | 
| coarse | coasts | coated | coatee | coater | 
| coatis | coaxal | coaxed | coaxer | coaxes | 
Note: These 15 6-letter words that start with 'coa' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with coal, coas, coat, coac, coag, coad, coar, coap, coax, coan, coau, coae, coam.
4-letter words start with 'coa' (3)