The word abstracters 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™ Play In The Letters abstracters
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Seven Letter Word Alert: (38 words)
abasers, abaters, abraser, abrases, abreact, abreast, acaters, actress, arrests, barters, basters, batters, bracers, breasts, cabaret, carters, casters, crasser, craters, rasters, ratrace, ratters, recasts, restart, retract, scarabs, scarers, scatter, searats, seastar, starers, starter, staters, stratas, tartars, tasters, teacart, tracers