The word unessential 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 unessential
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Seven Letter Word Alert: (61 words)
annulet, auletes, aulists, aunties, easiest, elastin, eluants, eluates, eluents, enlists, enseals, ensuite, entails, insults, intense, inulase, lateens, leanest, lenient, lenites, lineate, linnets, listens, lunates, luniest, nailset, neatens, nestles, netless, salient, salines, salutes, sateens, seitans, seitens, senates, sensate, sensual, sestina, sestine, siennas, silanes, silents, sinuate, sultans, sunnies, suntans, sustain, taluses, tealess, teasels, tensile, tieless, tinsels, tunnels, uneaten, unlists, unseals, unseats, unstain, utensil