There are 16 words that start with 'grey'.
| grey | greys | greyed |
| greyer | greyly | greyest |
| greyhen | greying | greyish |
| greylag | greyhens | greylags |
| greyness | greyhound | greyhounds |
| greynesses | ||
Note: These 16 words that start with 'grey' are found from the USA & Canada version of the tournament Scrabble word list.