There are 10 words that start with 'lagg'.
| lagged | lagger | 
| laggard | laggers | 
| lagging | laggards | 
| laggings | laggardly | 
| laggardness | laggardnesses | 
Note: These 10 words that start with 'lagg' are found from the USA & Canada version of the tournament Scrabble word list.