There are 35 words hidden in the letters of ILLEGAL, from 7 two-letter words up to ILLEGAL (7 letters). For points, ILLEGAL is best at 8.
No other single word uses all 7 letters of ILLEGAL. ILLEGAL has 7 letters: 3 vowels and 4 consonants, worth 8 points before any board bonuses.
7-letter words 1
5-letter words 4
agile6glial6ileal5legal6
4-letter words 8
egal5gale5gall5gill5glia5ilea4lall4leal4
3-letter words 15
age4ail3ale3all3ell3gae4gal4gel4gie4ill3lag4lea3leg4lei3lie3
2-letter words 7
ae2ag3ai2al2el2la2li2
Words are from our open word list and include some game-only words. Rude words are left out of this page; the unscrambler shows every valid word, lets you add blank tiles and filter by length.