The word unmotorized 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: 26
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (30 words)
demount, doormen, emotion, intrude, ioduret, ionomer, minuter, monitor, moodier, mordent, motored, mounted, mounter, mountie, mourned, munited, odorize, outdoer, outdone, outride, outrode, ozonide, remound, remount, routine, runtime, untimed, untired, untried, zootier