The word potboilers 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: 17
Highest Scoring Words With Friends™ Play In The Letters potboilers
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Seven Letter Word Alert: (47 words)
betoils, biotope, bipoles, blister, blooper, boilers, boleros, bolster, bolters, booster, booters, bristle, bristol, estriol, isotope, lobster, loiters, loopier, looters, oolites, orioles, petrols, politer, poorest, preboil, reboils, reboost, reboots, repilot, replots, resplit, respool, retools, riblets, ropiest, sootier, sorbite, spoiler, spooler, stoolie, stooper, toilers, toolers, topsoil, trilobe, triples, tripole