The word underquoting 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: 28
Highest Scoring Words With Friends™ Plays In The Letters underquoting
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Seven Letter Word Alert: (47 words)
denting, droning, dungeon, eroding, goutier, grinned, groined, grouted, grunted, guerdon, ignored, intoned, intoner, intrude, inuendo, ioduret, negroid, neutron, nondiet, nondrug, outgrin, outride, queuing, quinone, quoting, redoing, rending, renting, reunion, routine, routing, tending, tongued, torqued, touring, trudgen, turndun, turning, undergo, undoing, unguent, unnoted, unquiet, unquote, untired, untried, untuned