There are 14 words that start with 'lamen'.
| lament | laments | 
| lameness | lamented | 
| lamenter | lamenters | 
| lamenting | lamenesses | 
| lamentable | lamentably | 
| lamentedly | lamentation | 
| lamentations | lamentableness | 
Note: These 14 words that start with 'lamen' are found from the USA & Canada version of the tournament Scrabble word list.