The word unnaturalized 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: 28
Highest Scoring Words With Friends™ Plays In The Letters unnaturalized
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Seven Letter Word Alert: (66 words)
adrenal, adulate, airdate, alanine, andante, annelid, annular, annulet, azurine, azurite, detrain, diazane, dilater, diluent, diluter, diurnal, dualize, entrain, intrude, lantern, latrine, launder, lunaria, lunated, natural, natured, neurula, neutral, radiant, radiate, radulae, ratline, reaudit, reliant, retinal, tendril, tiaraed, tradein, trailed, trained, trenail, trundle, trunnel, turndun, tzarina, unaired, unalert, unalter, undealt, unearnt, unideal, unladen, unlearn, unlined, unrated, unruled, untiled, untired, untread, untried, untuned, uralite, urazine, urinate, zealant, zenaida