There are 21 words that start with 'ruff'.
| ruff | ruffe | ruffs | 
| ruffed | ruffes | ruffle | 
| ruffly | ruffian | ruffing | 
| ruffled | ruffler | ruffles | 
| ruffians | rufflers | rufflier | 
| rufflike | ruffling | ruffianly | 
| ruffliest | ruffianism | ruffianisms | 
Note: These 21 words that start with 'ruff' are found from the USA & Canada version of the tournament Scrabble word list.