The word linebackers 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: 23
Highest Scoring Words With Friends™ Play In The Letters linebackers
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Seven Letter Word Alert: (80 words)
absence, alkenes, arcsine, arsenic, ascribe, backers, baleens, balkers, balkier, bankers, beakers, beanies, bickers, bilkers, blacken, blacker, bleaker, blinker, bracken, breakin, brisken, cablers, caliber, calibre, cankers, carbeen, carbene, carbine, careens, carnies, cereals, cleaner, cleanse, clinker, crinkle, eclairs, eelskin, enabler, enables, kernels, lancers, lankier, leakers, leakier, leaners, lesbian, license, lickers, linkers, nailers, nickase, nickels, nickles, realise, rebacks, rebakes, rebales, recanes, reclean, recline, relaces, relines, relinks, renails, rescale, reslice, saclike, scalene, scalier, sclerae, scribal, silence, sincere, skiable, slacken, slacker, slicker, snakier, sneaker, snicker