The word rubbernecking 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: 31
Highest Scoring Words With Friends™ Play In The Letters rubbernecking
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Seven Letter Word Alert: (35 words)
beguine, bringer, buckeen, bucking, burning, burring, cribber, cringer, crubeen, curbing, curring, eugenic, generic, genuine, grinner, grubber, guckier, gunkier, iceberg, incubee, keening, kerning, kneeing, necking, nubbier, nubbing, rebegin, rebegun, rebuker, recking, reeking, reigner, reincur, rubbing, runnier