The word backstrokes is playable in Words With Friends™, but 1 blank substituting for the letter 'k' is 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 backstrokes
:
Seven Letter Word Alert: (47 words)
actress, arkoses, backers, baskets, basters, besorts, boaster, boaters, borates, bracket, breasts, brocket, caskets, casters, castors, coakers, coaster, corsets, costars, escorts, rackets, rebacks, reboast, recasts, recoats, resoaks, restack, restock, retacks, retasks, rockets, sackers, sectors, setback, skaters, soakers, sockets, sorbate, sorbets, stacker, stocker, stokers, streaks, strobes, strokes, tackers, taskers