The word scattergun 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: 17
Highest Scoring Words With Friends™ Plays In The Letters scattergun
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Seven Letter Word Alert: (38 words)
acutest, argents, astuter, attunes, canters, cauters, centaur, curates, cutrate, cutters, encrust, entrust, garnets, gaunter, gunters, gutters, natters, natures, nectars, nutcase, nutters, recants, saunter, scanter, scatter, stature, strange, stunter, targets, taunter, tautens, tetanus, trances, truants, uncages, uncarts, uncrate, unstage