The word haematoxylons 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: 29
Highest Scoring Words With Friends™ Play In The Letters haematoxylons
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Seven Letter Word Alert: (50 words)
amnesty, amylase, analyse, analyst, analyte, anatomy, anomaly, anthems, axotomy, axstone, ethanol, etymons, exonyms, hamaxes, hamlets, holonym, honesty, hyaenas, hymnals, laments, leantos, loathes, maltose, manhole, mantels, mantles, menthol, methoxy, methyls, monthly, moolahs, motleys, oatmeal, osteoma, oxalate, oxolane, oxymels, oxysalt, oxysome, oxytone, sealant, smoothy, soothly, tamales, taxonym, theonym, toolman, toolmen, xantham, xylomas