The word platitudinizing 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: 34
Highest Scoring Words With Friends™ Play In The Letters platitudinizing
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Seven Letter Word Alert: (32 words)
dialing, digital, dinting, diptail, initial, intagli, landing, languid, lauding, nailing, nuptial, nutting, paining, panting, patting, pigtail, pintail, pitting, planing, plating, plaudit, punting, putting, tailgun, tailing, tailpin, tauting, tilting, tinting, unalign, uniting, zingani