The word reliabilities 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (66 words)
aeriest, airiest, albites, alibies, astilbe, baiters, ballets, barites, beaters, bellies, berates, billets, bitsier, blaster, bleater, blister, braille, bristle, elaters, ileitis, illites, irisate, labeler, libates, libeler, liberal, literal, rallies, realest, realise, realist, rebaits, rebales, rebates, rebells, rebills, rebites, reblast, relabel, relates, retails, retells, retiles, retills, riblets, rillets, risible, saltier, seriate, sillier, siltier, slatier, stabler, stealer, stellar, sterile, stiller, tallier, tallies, tellers, tellies, tillers, trebles, trellis, triable, tribals