The word airspeeds 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: 13
Highest Scoring Words With Friends™ Play In The Letters airspeeds
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Seven Letter Word Alert: (25 words)
asperse, aspired, aspires, dearies, depress, desires, despair, despise, diapers, disease, paresis, praised, praises, preside, pressed, readies, resides, respade, seaside, serapes, spaders, speared, spiders, spireas, spreads