The word alderflies 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: 16
Highest Scoring Words With Friends™ Play In The Letters alderflies
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Seven Letter Word Alert: (34 words)
aediles, dealers, dearies, defiers, defiler, defiles, defleas, derails, dialers, dialler, faeries, fallers, fardels, federal, fellers, fielder, fillers, flailed, freesia, frilled, leaders, leafier, rallied, rallies, readies, realise, redeals, redials, refiled, refiles, refills, reflies, reliefs, sealife