The letters in MISTAKE make 154 words of two letters or more. The longest is MISTAKE at 7 letters, and the highest-scoring is MISTAKE at 13 points.
No other single word uses all 7 letters of MISTAKE. MISTAKE has 7 letters: 3 vowels and 4 consonants, worth 13 points before any board bonuses.
7-letter words 1
6-letter words 5
kismat12kismet12misate8miseat8samite8
5-letter words 29
amies7emits7ikats9items7kames11kites9maist7makes11mates7meats7metis7mikes11mites7samek11satem7skate9skite9smite7stake9steak9steam7stime7takes9tames7tamis7teaks9teams7tikes9times7
4-letter words 60
aims6aits4amie6amis6ates4east4eats4emit6etas4ikat8item6kaes8kame10kami10kats8keas8kist8kite8kits8maes6make10mask10mast6mate6mats6meat6mesa6meta6mike10mise6mist6mite6sake8saki8same6sate4sati4seam6seat4semi6seta4sika8sike8sima6site4skat8skim10skit8smit6stem6take8tame6tams6task8teak8team6teas4ties4tike8time6
3-letter words 38
aim5ais3ait3ami5ask7ate3eat3ems5eta3ism5its3kae7kas7kat7kea7kit7mae5mas5mat5mes5met5mis5sae3sat3sea3sei3set3sim5sit3ska7ski7tae3tam5tas3tea3tie3tis3tsk7
2-letter words 21
ae2ai2am4as2at2em4es2et2is2it2ka6ki6ks6ma4me4mi4ms4si2ta2ti2ts2
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.