There are 17 words that start with 'cova'.
| covary | covalent | covaried |
| covaries | covalence | covalency |
| covariant | covariate | covarying |
| covalences | covalently | covariance |
| covariates | covalencies | covariances |
| covariation | covariations | |
Note: These 17 words that start with 'cova' are found from the USA & Canada version of the tournament Scrabble word list.