The word disputable 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: 19
Highest Scoring Words With Friends™ Play In The Letters disputable
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Seven Letter Word Alert: (41 words)
abludes, abluted, ablutes, albites, aplites, astilbe, audible, baldest, baptise, belauds, bipedal, blasted, budlets, bustled, details, dialups, dilates, dilutes, disable, dispute, dualise, dualist, duelist, libated, libates, palsied, piebald, pilates, plaited, plastid, plaudit, pulsate, saluted, stabled, stapled, stipula, stipule, subedit, subpial, upbeats, updates