There are 18 words that start with 'redd'.
| redd | redds |
| redded | redden |
| redder | reddle |
| reddens | redders |
| reddest | redding |
| reddish | reddled |
| reddles | reddened |
| reddling | reddening |
| reddishness | reddishnesses |
Note: These 18 words that start with 'redd' are found from the USA & Canada version of the tournament Scrabble word list.