There are 16 10-letter words that start with 'lig'.
| ligaturing | lightbulbs | lighteners | 
| lightening | lighterage | lightering | 
| lightfaced | lightfaces | lighthouse | 
| lightnings | lightplane | lightproof | 
| lightships | lighttight | lightwoods | 
| lignifying | ||
Note: These 16 10-letter words that start with 'lig' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with ligh, liga, lign, ligu, ligr, lige.
5-letter words start with 'lig' (3)