There are 12 words that start with 'coev'.
| coeval | coevals | 
| coevally | coevolve | 
| coevality | coevolved | 
| coevolves | coevolving | 
| coevalities | coevolution | 
| coevolutions | coevolutionary | 
Note: These 12 words that start with 'coev' are found from the USA & Canada version of the tournament Scrabble word list.