The word pusillanimity 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 pusillanimity
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Seven Letter Word Alert: (39 words)
alliums, animist, implant, initial, install, instill, lamplit, lustily, militia, misplan, misplay, mistily, mustily, nastily, nullity, nuptial, pallium, palmist, pianist, pintail, plainly, plasmin, ptyalin, saintly, saltily, slimily, stimuli, stipula, sunlamp, sunlily, tailpin, timpani, tipsily, tsunami, tympani, unplays, unsilty, unsplit, upslant