Unscrambling IMPROVE gives 78 words. IMPROVE is the longest, and IMPROVE scores the most at 14 points.
No other single word uses all 7 letters of IMPROVE. IMPROVE has 7 letters: 3 vowels and 4 consonants, worth 14 points before any board bonuses.
7-letter words 1
6-letter words 2
improv13mopier10
5-letter words 11
moire7moper9mover10movie10prime9primo9proem9prove10viper10vireo8vomer10
4-letter words 25
emir6mire6mope8more6move9omer6over7peri6perm8perv9pier6poem8pome8pore6prim8prom8repo6rime6ripe6rive7romp8rope6rove7vier7vire7
3-letter words 26
emo5imp7ire3mir5moi5mop7mor5ope5ore3per5pie5poe5poi5pom7pro5rei3rem5rep5rev6rim5rip5roe3rom5vie6vim8voe6
2-letter words 13
em4er2me4mi4mo4oe2oi2om4op4or2pe4pi4re2
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.