The letters in QUANTITY make 64 words of two letters or more. The longest is QUANTITY at 8 letters, and the highest-scoring is QUANTITY at 20 points.
No other single word uses all 8 letters of QUANTITY. QUANTITY has 8 letters: 3 vowels and 5 consonants, worth 20 points before any board bonuses.
8-letter words 1
6-letter words 3
quaint15quinta15yanqui18
5-letter words 10
aunty8natty8nitty8nutty8quant14quint14taint5taunt5titan5unity8
4-letter words 15
anti4aunt4ayin7quai13quay16quin13quit13tain4taut4tint4tiny7tuna4unai4unit4yuan7
3-letter words 21
ain3ait3ani3ant3any6att3nay6nit3nut3qat12qua12tan3tat3tau3tin3tui3tun3tut3uni3uta3yin6
2-letter words 14
ai2an2at2ay5in2it2na2nu2qi11ta2ti2un2ut2ya5
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.