The letters in EXCLUSIVE make 114 words of two letters or more. The longest is EXCLUSIVE at 9 letters, and the highest-scoring is EXCLUSIVE at 21 points.
No other single word uses all 9 letters of EXCLUSIVE. EXCLUSIVE has 9 letters: 4 vowels and 5 consonants, worth 21 points before any board bonuses.
9-letter words 1
7-letter words 2
elusive10vesicle12
6-letter words 10
5-letter words 24
ceils7clues7culex14elves8evils8excel14execs14exile12ileus5lexes12lexis12lieus5lieve8lives8luces7luxes12sieve8silex12slice7sulci7veils8vexes15vexil15vices10
4-letter words 34
cees6ceil6cels6clue6cues6ecus6eels4else4eves7evil7exec13exes11ices6ilex11isle4lees4leis4lice6lies4lieu4live7luce6lues4luvs7luxe11seel4sice6slue4vees7veil7vice9vies7vile7vise7
3-letter words 31
cee5cel5cis5cue5ecu5eel3els3eve6ice5lee3lei3leu3lev6lex10lie3lis3luv6lux10sec5see3sei3sel3sic5six10sue3use3vee6vex13vie6vis6xis10
2-letter words 12
cs4el2es2ex9is2li2ls2lx9si2us2xi9xu9
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.