The word housepaint 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: 17
Highest Scoring Words With Friends™ Play In The Letters housepaint
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Seven Letter Word Alert: (25 words)
apthous, aunties, hatpins, heinous, histone, housane, inhouse, iphones, opiates, outspan, outspin, panties, patines, peanuts, petunia, phonies, piteous, poutine, puniest, sinuate, spinout, teashop, thiones, utopian, utopias