The word peristylar 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: 16
Highest Scoring Words With Friends™ Play In The Letters peristylar
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Seven Letter Word Alert: (50 words)
aplites, artsier, aspirer, irately, paisley, palters, parleys, parsley, parties, pastier, pilates, pirates, plaster, platers, players, praiser, praters, prayers, prelaty, pteryla, pyrites, raspier, realist, reality, repairs, replait, replays, reprays, resplit, respray, restrap, retails, retraps, retrial, saltier, slatier, sparely, splayer, sprayer, stapler, strayer, striper, stripey, stylier, tarries, tearily, trailer, traipse, triples, trysail