The letters in THINKING make 42 words of two letters or more. The longest is THINKING at 8 letters, and the highest-scoring is THINKING at 16 points.
No other single word uses all 8 letters of THINKING. THINKING has 8 letters: 2 vowels and 6 consonants, worth 16 points before any board bonuses.
8-letter words 1
7-letter words 2
hinting11kithing15
6-letter words 5
hiking14inking11kiting11knight14tining7
5-letter words 6
innit5kinin9night9ninth8thing9think12
4-letter words 10
gink9hint7inti4king9kith11knit8nigh8thin7tiki8ting5
3-letter words 13
ghi7gin4git4hin6hit6ink7inn3khi10kin7kit7nit3nth6tin3
2-letter words 5
hi5in2it2ki6ti2
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.