Unscrambling IMPROVED gives 157 words. IMPROVED is the longest, and IMPROVED scores the most at 16 points.
No other single word uses all 8 letters of IMPROVED. IMPROVED has 8 letters: 3 vowels and 5 consonants, worth 16 points before any board bonuses.
8-letter words 1
7-letter words 2
6-letter words 10
5-letter words 31
dimer8diver9doper8drive9drove9imped10mired8moire7moped10moper9moved11mover10movie10pedro8pored8pride8pried8prime9primo9proem9prove10redip8rimed8riped8rived9roped8roved9video9viper10vireo8vomer10
4-letter words 53
demo7derm7derv8dime7dire5dive8doer5dome7dope7dore5dorm7dorp7dove8drip7drop7emir6idem7ired5mire6mode7modi7mope8more6move9omer6oped7over7peri6perm8perv9pied7pier6poem8pome8pore6prim8prod7prom8redo5repo6ride5rime6ripe6rive7rode5romp8rope6rove7vide8vied8vier7vire7void8
3-letter words 42
dev7die4dim6dip6doe4dom6dor4emo5imp7ire3med6mid6mir5mod6moi5mop7mor5ode4ope5ore3ped6per5pie5pod6poe5poi5pom7pro5red4rei3rem5rep5rev6rid4rim5rip5rod4roe3rom5vie6vim8voe6
2-letter words 18
de3do3ed3em4er2id3me4mi4mo4od3oe2oi2om4op4or2pe4pi4re2
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.