There are 13 words that start with 'guess'.
| guess | guessed |
| guesser | guesses |
| guessers | guessing |
| guessable | guesswork |
| guessworks | guesstimate |
| guesstimated | guesstimates |
| guesstimating | |
Note: These 13 words that start with 'guess' are found from the USA & Canada version of the tournament Scrabble word list.