The word gearsticks 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: 19
Highest Scoring Words With Friends™ Plays In The Letters gearsticks
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Seven Letter Word Alert: (43 words)
actress, aigrets, ascites, cagiest, cakiest, caskets, casters, cristae, gaiters, gaskets, gassier, gastric, kaisers, karites, karstic, raciest, racists, rackets, recasts, restack, restick, retacks, retasks, rickets, sackers, sagiest, satires, seasick, sickest, skaters, stacker, stagers, stagier, sticker, streaks, stricks, strikes, tackers, tackier, taskers, tickers, tigress, triages