The word unsentimental 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: 21
Highest Scoring Words With Friends™ Play In The Letters unsentimental
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Seven Letter Word Alert: (89 words)
ailment, aliment, amulets, annulet, attunes, auletes, aunties, elastin, eluants, eluates, eluents, eminent, emulant, emulate, emulsin, enamels, enamine, ensuite, entails, entitle, estuate, inmates, instant, instate, intense, intents, inulase, itemset, laments, lateens, latents, latites, leanest, lenient, lenites, lineate, lineman, linemen, linnets, lunates, luniest, lutites, mantels, mantles, matinee, meanest, meanies, melanin, mensual, mettles, minuets, minutes, mistune, mittens, munites, mutants, mutates, nailset, nannies, neatens, neatest, netmail, nettles, nutlets, nutmeal, nutmeat, salient, seminal, sinuate, situate, smitten, stannum, talents, tannest, tannins, tautens, teatime, telnets, tenants, tensile, tetanus, tsunami, tunnels, uneaten, unmates, unmeant, unsmelt, unstain, utensil