The letters in EXCESSIVE make 56 words of two letters or more. The longest is EXCESSIVE at 9 letters, and the highest-scoring is EXCESSIVE at 21 points.
No other single word uses all 9 letters of EXCESSIVE. EXCESSIVE has 9 letters: 4 vowels and 5 consonants, worth 21 points before any board bonuses.
9-letter words 1
7-letter words 1
excises16
6-letter words 6
5-letter words 8
execs14seise5sices7sieve8sixes12vexes15vices10vises8
4-letter words 17
cees6cess6eses4esse4eves7exec13exes11ices6secs6sees4seis4sice6sics6vees7vice9vies7vise7
3-letter words 16
cee5cis5ess3eve6ice5sec5see3sei3sic5sis3six10vee6vex13vie6vis6xis10
2-letter words 7
cs4es2ex9is2si2ss2xi9
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.