The word attitudinizes 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: 25
Highest Scoring Words With Friends™ Play In The Letters attitudinizes
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Seven Letter Word Alert: (38 words)
attends, attuned, attunes, aunties, dentist, destain, detains, diazine, dietist, distant, ditties, dunites, indites, instate, instead, intuits, sainted, sinuate, situate, stained, statued, statute, stinted, student, stunted, tainted, taunted, tautens, tautest, tetanus, tidiest, tiniest, unities, unitize, unsated, unsized, zaniest, zeatins