The word unidimensional 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: 23
Highest Scoring Words With Friends™ Play In The Letters unidimensional
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Seven Letter Word Alert: (91 words)
adonise, almonds, amidone, amnions, anilide, aniline, animose, annelid, anodise, asinine, daemons, dailies, denials, diamine, diimine, dimuons, diosmin, doilies, domains, dualise, dualism, elision, elusion, emulsin, idolise, imidine, indians, indiums, indoles, inlands, inlines, inosine, insulin, inuendo, inulase, inulins, inuloid, iodines, ionised, lamnoid, liaised, liaison, lindens, lineman, lionise, lionism, maidens, mansion, maudlin, medians, medusal, melanin, mensual, midline, minions, misdeal, misdial, misdone, mislaid, mislead, modules, monilia, moulins, mundane, nannies, nodules, nominal, nonanes, nonland, nonlead, nonmail, nonmale, nonmeal, nonsale, nonsane, sandmen, sealion, seminal, sideman, snailed, solanum, sundial, unaimed, undines, unideal, unladen, unlined, unloads, unmined, unnamed, unoiled