The word sideropenia 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: 16
Highest Scoring Words With Friends™ Play In The Letters sideropenia
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Seven Letter Word Alert: (64 words)
adipose, adonise, airside, aneroid, aniseed, anodise, aspired, aspirin, dairies, dearies, denarii, deniers, denoise, depones, deposer, despair, diapers, diaries, donairs, endears, endorse, episode, indorse, inroads, insider, inspire, iodines, iodiser, ionised, ioniser, ironies, noisier, openers, operand, ordains, panders, pardons, peonies, periods, persona, pioneer, ponders, praised, preside, readies, reopens, repined, repines, reposed, respade, respond, ripened, roadies, rosined, sandier, sardine, soapier, speared, spender, spinier, spinode, spionid, spiroid, spondee