There are 94 words hidden in the letters of FLASHES, from 15 two-letter words up to FLASHES (7 letters). For points, FLASHES is best at 13.
No other single word uses all 7 letters of FLASHES. FLASHES has 7 letters: 2 vowels and 5 consonants, worth 13 points before any board bonuses.
7-letter words 1
6-letter words 8
fashes12hassel9hassle9lashes9selahs9shales9sheafs12sheals9
5-letter words 22
alefs8ashes8false8flash11fleas8flesh11hales8heals8lases5leafs8leash8safes8sales5seals5selah8selfs8shale8sheaf11sheal8sheas8shelf11slash8
4-letter words 27
alef7ales4fash10feal7fehs10fess7flea7haes7hale7half10heal7lase4lash7lass4leaf7leas4less4safe7sale4sals4sash7seal4seas4self7sels4shea7shes7
3-letter words 21
ale3als3ash6efs6elf6els3ess3fas6feh9hae6has6hes6las3lea3sae3sal3sea3sel3sha6she6ssh6
2-letter words 15
ae2ah5al2as2ef5eh5el2es2fa5ha5he5la2ls2sh5ss2
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.