The word internuncios 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: 19
Highest Scoring Words With Friends™ Play In The Letters internuncios
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Seven Letter Word Alert: (64 words)
cistern, citrine, citrons, coiners, consent, cornets, counter, cretins, cronies, cuisine, encrust, eosinic, erotics, iconist, incisor, inciter, incites, incrust, inosine, inosite, interns, intoner, intones, introns, inturns, ioniser, irenics, ironies, neurons, neutron, nitrous, noisier, noncute, nonsuit, nonuser, norites, notices, nutsier, orients, recoins, recount, rennins, reunion, routine, scouter, section, sericin, stonier, stourie, stunner, suction, sunnier, tension, tinners, tinnier, tonsure, triones, trounce, unction, unicorn, uniters, unities, unrisen, unstoic