The word saltshakers 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: 18
Highest Scoring Words With Friends™ Play In The Letters saltshakers
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Seven Letter Word Alert: (29 words)
artless, ashless, assarts, asserts, atlases, halters, hassles, hatless, kashers, lashers, lathers, rashest, retasks, searats, seastar, shakers, skaters, slasher, slashes, slaters, slather, stalker, stashes, streaks, talkers, tarsals, taskers, tassels, trashes