The word windflowers 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: 23
Highest Scoring Words With Friends™ Play In The Letters windflowers
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Seven Letter Word Alert: (38 words)
dowlier, downers, downier, dowries, enfolds, finders, florins, flowers, folders, fondler, fondles, fowlers, friends, frowned, indoles, indorse, inflows, infolds, olefins, ownself, refinds, reflown, reflows, refolds, rewinds, rosined, rowdies, rowwise, snowier, soldier, swindle, swirled, weirdos, widower, winders, windows, windrow, wonders