There are 21 words that start with 'swag'.
| swag | swage | swags | 
| swaged | swager | swages | 
| swagers | swagged | swagger | 
| swaggie | swaging | swagman | 
| swagmen | swaggers | swaggies | 
| swagging | swaggered | swaggerer | 
| swaggerers | swaggering | swaggeringly | 
Note: These 21 words that start with 'swag' are found from the USA & Canada version of the tournament Scrabble word list.