The letters in GUARANTEE make 222 words of two letters or more. The longest is GUARANTEE at 9 letters, and the highest-scoring is GUARANTEE at 10 points.
No other single word uses all 9 letters of GUARANTEE. GUARANTEE has 9 letters: 5 vowels and 4 consonants, worth 10 points before any board bonuses.
9-letter words 1
8-letter words 1
runagate9
7-letter words 8
aureate7gaunter8grantee8greaten8negater8reagent8tanager8uneager8
6-letter words 24
aerate6agnate7argent7aurate6eatage7enrage7entera6ergate7garnet7gateau7genera7gerent7gunter7gurnet7nature6neater6negate7neuter6regent7retune6rugate7tenure6tureen6urgent7
5-letter words 53
agate6agene6agent6agree6anear5anger6antae5antra5antre5areae5arena5arete5argue6auger6aurae5eager6eagre6eaten5eater5egret6enate5enter5enure5gater6gaunt6genet6genre6genua6grana6grant6grate6great6green6greet6grunt6ragee6ranee5range6ratan5reata5regna6rente5retag6ruana5rugae6targe6tegua6tenge6terga6terne5treen5tuner5urate5
4-letter words 63
agar5agee5ager5ague5anga5anta4ante4area4aunt4aura4earn4eger5erne4etna4gaen5gane5gate5gaun5gaur5gean5gear5gene5gent5genu5geta5gnar5gnat5gran5grat5gree5grue5guan5guar5near4neat4raga5rage5rang5rant4rata4rate4rent4rete4ruga5rune4rung5runt4tana4tang5tare4tarn4tear4teen4tern4tree4true4trug5tuna4tune4tung5turn4urea4urge5
3-letter words 56
aga4age4ana3ane3ant3are3art3ate3ear3eat3eau3eng4era3ere3erg4ern3ert3eta3gae4gan4gar4gat4gee4gen4get4gnu4gre4gut4nae3nag4nee3net3nut3rag4ran3rat3ree3reg4ret3rue3rug4run3rut3tae3tag4tan3tar3tau3tea3tee3teg4ten3tug4tun3urn3uta3
2-letter words 16
aa2ae2ag3an2ar2at2en2er2et2na2ne2nu2re2ta2un2ut2
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.