There are 13 words that start with 'swell'.
| swell | swells |
| swelled | sweller |
| swellest | swelling |
| swellfish | swellhead |
| swellings | swellheads |
| swellfishes | swellheaded |
| swellheadedness | |
Note: These 13 words that start with 'swell' are found from the USA & Canada version of the tournament Scrabble word list.