There are 13 words that start with 'serg'.
| serge | serged | serger | 
| serges | sergers | serging | 
| sergeant | sergings | sergeancy | 
| sergeants | sergeanty | sergeancies | 
| sergeanties | ||
Note: These 13 words that start with 'serg' are found from the USA & Canada version of the tournament Scrabble word list.