There are 14 words that start with 'illust'.
| illustrate | illustrated | 
| illustrates | illustrator | 
| illustrious | illustrating | 
| illustration | illustrative | 
| illustrators | illustrations | 
| illustriously | illustrational | 
| illustratively | illustriousness | 
Note: These 14 words that start with 'illust' are found from the USA & Canada version of the tournament Scrabble word list.