The word resplendency 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: 24
Highest Scoring Words With Friends™ Play In The Letters resplendency
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Seven Letter Word Alert: (28 words)
creeped, decenes, decrees, decynes, deepens, densely, lenders, needers, needler, needles, peelers, penners, precede, preened, presync, recedes, redeyes, repeels, scenery, screeny, seceder, sleeper, slender, sneered, speeder, spender, ycleped, yelpers