The word tramplings 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 tramplings
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Seven Letter Word Alert: (35 words)
anglist, armpits, gastrin, imparts, implant, lapsing, lasting, maligns, malting, margins, marlins, martins, matings, migrant, misplan, mistral, palming, palmist, parings, parsing, parting, pasting, plasmin, plating, prating, prismal, rasping, ratings, salting, sapling, slating, sparing, staring, tamping, tapings