The word breadwinner 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: 20
Highest Scoring Words With Friends™ Play In The Letters breadwinner
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Seven Letter Word Alert: (27 words)
adenine, barreed, bawdier, bawneen, beadier, bendier, berried, braider, brained, brander, dernier, drainer, inbreed, indrawn, nerdier, rabider, randier, readier, rebraid, rebrand, redrawn, rewired, wearied, wearier, webinar, weirder, widener