The word bloodsuckers 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: 25
Highest Scoring Words With Friends™ Play In The Letters bloodsuckers
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Seven Letter Word Alert: (73 words)
becloud, becurls, bedrock, bedsock, beducks, bedusks, bescour, blocked, blocker, bloused, blouses, boleros, boluses, boodles, bookers, boulder, buckled, buckler, buckles, budless, buskers, closers, closure, cobless, colobus, colours, cookers, coolers, coursed, courses, creosol, cresols, croodle, crooked, crossed, cubless, curdles, deblock, decolor, dockers, doubler, doubles, dousers, duckers, escudos, lockers, lookers, obduces, obscure, reblock, rebooks, recooks, redbuck, redocks, relocks, relooks, rodless, roebuck, rosebud, scolder, scoured, sculked, sculker, solders, sourced, sources, subcode, suckers, suckled, suckler, suckles, sucrose, sulkers