The word stylemarks 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 stylemarks
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Seven Letter Word Alert: (26 words)
armless, armlets, artless, lysates, markets, maskers, masters, mastery, myrtles, rayless, retasks, skaters, slaters, slayers, smartly, stalker, starkly, stayers, streaks, streaky, streams, streamy, stylers, talkers, taskers, tramels