There are 12 words that start with 'swash'.
| swash | swashed | 
| swasher | swashes | 
| swashers | swashing | 
| swashbuckle | swashbuckled | 
| swashbuckler | swashbuckles | 
| swashbucklers | swashbuckling | 
Note: These 12 words that start with 'swash' are found from the USA & Canada version of the tournament Scrabble word list.