The word undershoot is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 15
Highest Scoring Words With Friends™ Play In The Letters undershoot
:
Seven Letter Word Alert: (41 words)
dehorns, dehorts, detours, honored, honours, hornets, hotrods, hunters, onerous, onshore, outdoer, outdoes, outdone, outrode, reshoot, resound, rodents, roosted, rotunds, shooter, shorted, shorten, shouted, shouter, shunted, shunter, snooted, snorted, snouted, soothed, soother, sounder, thorned, throned, thrones, thunder, tonsure, undoers, undrest, unhorse, unshoed