The word hairstyles 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: 15
Highest Scoring Words With Friends™ Play In The Letters hairstyles
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Seven Letter Word Alert: (43 words)
airless, artless, ashiest, earthly, halites, halters, hastier, hastily, hatless, hyalite, irately, lashers, lathers, lathery, lyrists, lysates, rashest, rayless, realist, reality, relists, resails, retails, sailers, saltier, satires, serials, shalier, shyster, slasher, slaters, slather, slatier, slayers, slither, stayers, stylers, stylier, stylise, stylish, tearily, trashes, trysail