The word uninstructed 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: 20
Highest Scoring Words With Friends™ Play In The Letters uninstructed
:
Seven Letter Word Alert: (65 words)
cinders, cistern, cittern, credits, cretins, crudest, cruised, crusted, cutters, decrust, dentins, dentist, dinners, directs, discern, dunites, dustier, encrust, entrust, incrust, indents, inducer, induces, inducts, insured, intends, intents, interns, intrude, intrust, inturns, nutsier, nutters, nuttier, reducts, rescind, retints, rudites, stinted, student, studier, stunned, stunner, stunted, stunter, sunnier, sutured, tinders, tinners, tinters, trident, trisect, trusted, turndun, uncited, uncured, uncurse, undents, undines, undrest, uniters, unrisen, untired, untried, untuned