The letters in OVERNIGHT make 264 words of two letters or more. The longest is OVERNIGHT at 9 letters, and the highest-scoring is OVERNIGHT at 16 points.
No other single word uses all 9 letters of OVERNIGHT. OVERNIGHT has 9 letters: 3 vowels and 6 consonants, worth 16 points before any board bonuses.
9-letter words 1
8-letter words 3
hovering15overthin14revoting12
7-letter words 6
eightvo14genitor8overing11thriven13vertigo11vetoing11
6-letter words 33
5-letter words 64
eight9envoi8ergot6genro6giron6girth9given9giver9goner6griot6grith9groin6grove9heron8hinge9honer8hover11inert5ingot6inter5intro5irone5ither8negro6neigh9night9niter5nitre5nitro5north8noter5ogive9ohing9other8overt8ovine8reign6renig6rhino8right9riven8rivet8roven8tenor5thegn9thein8their8thine8thing9thong9thorn8throe8tiger6tigon6tinge6toner5trigo6trine5trone5trove8vigor9vireo8vogie9voter8
4-letter words 75
ergo5gent5gien5girn5giro5girt5gite5give8goer5gone5gore5goth8grin5grit5grot5heir7hent7hern7hero7hint7hire7hive10hoer7hone7hong8horn7hove10inro4into4iron4nevi7nigh8nite4noir4nori4note4ogre5oven7over7rein4rent4ring5riot4rite4rive7rote4roti4rove7tern4then7thin7thio7thir7thro7tier4tine4ting5tire4tiro4tone4tong5tore4tori4torn4trig5trio4vein7vent7vert7veto7vier7vine7vino7vire7vote7
3-letter words 62
ego4eng4eon3erg4ern3ert3eth6gen4get4ghi7gie4gin4git4gor4got4gre4hen6her6het6hie6hin6hit6hoe6hog7hon6hot6ion3ire3net3nit3nog4noh6nor3not3nth6one3ore3ort3reg4rei3ret3rev6rho6rig4rin3roe3rot3teg4ten3the6tho6tie3tin3toe3tog4ton3tor3veg7vet6vie6vig7voe6
2-letter words 20
eh5en2er2et2go3he5hi5ho5in2it2ne2no2oe2oh5oi2on2or2re2ti2to2
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.