There are 38 words hidden in the letters of UNHAPPY, from 11 two-letter words up to UNHAPPY (7 letters). For points, UNHAPPY is best at 17.
No other single word uses all 7 letters of UNHAPPY. UNHAPPY has 7 letters: 2 vowels and 5 consonants, worth 17 points before any board bonuses.
7-letter words 1
5-letter words 2
happy15nappy12
4-letter words 5
puna6puny9pupa8yaup9yuan7
3-letter words 19
any6hap8hay9hun6hup8hyp11nah6nap5nay6pah8pan5pap7pay8pun5pup7pya8yah9yap8yup8
2-letter words 11
ah5an2ay5ha5na2nu2pa4uh5un2up4ya5
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.