The letters in LETTING make 63 words of two letters or more. The longest is LETTING at 7 letters, and the highest-scoring is LETTING at 8 points.
No other single word uses all 7 letters of LETTING. LETTING has 7 letters: 2 vowels and 5 consonants, worth 8 points before any board bonuses.
7-letter words 1
6-letter words 3
gentil7litten6tingle7
5-letter words 7
elint5glint6ingle6inlet5legit6tinge6title5
4-letter words 20
gelt5gent5gien5gilt5gite5glen5lent4lien4line4ling5lint4lite4nett4nite4tent4tile4tilt4tine4ting5tint4
3-letter words 23
eng4gel4gen4get4gie4gin4git4leg4lei3let3lie3lin3lit3net3nil3nit3teg4tel3ten3tet3tie3til3tin3
2-letter words 9
el2en2et2in2it2li2ln2ne2ti2
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.