There are 15 words that start with 'expert'.
| expert | experts | experted | 
| expertly | experting | expertise | 
| expertism | expertize | expertises | 
| expertisms | expertized | expertizes | 
| expertness | expertizing | expertnesses | 
Note: These 15 words that start with 'expert' are found from the USA & Canada version of the tournament Scrabble word list.