The word receivables 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: 22
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (41 words)
ascribe, beavers, believe, bereave, beslave, cablers, caliber, calibre, caviler, cereals, clavier, cleaver, cleaves, eclairs, laveers, leavers, realise, rebales, receive, relaces, release, relieve, relives, rescale, reslice, reveals, reviles, scalier, sclerae, scribal, seeable, service, servile, several, varices, veilers, velaric, verbals, vesical, vesicle, viscera