The word uncertified 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 uncertified
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Seven Letter Word Alert: (43 words)
centred, citrine, deficit, definer, defunct, deifier, denture, detinue, detuner, dietine, edifice, edifier, eidetic, enteric, enticed, enticer, eructed, erudite, fruited, incited, inciter, inditer, inducer, intrude, niftier, nitride, recited, refined, refuted, reified, retuned, reunite, tenured, uncited, unerect, unfired, unfreed, unified, unifier, untired, untried, uridine, uterine