The word roundtable 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™ Plays In The Letters
Seven Letter Word Alert: (60 words)
abluent, abluted, aborted, bandlet, baronet, bartend, blander, bloated, bloater, blonder, blunder, blunted, blunter, blurted, boulder, bounder, broaden, butanol, delator, doubler, doublet, doubter, durable, labored, launder, leotard, lobated, lunated, natured, nebular, neutral, nodular, notable, obtrude, outbade, outbled, outbred, outdare, outearn, outlead, outread, readout, rebound, redoubt, rotunda, roundel, rubeola, taboule, trouble, trundle, tunable, unalert, unalter, unbaled, unboard, undealt, unlobed, unrated, unrobed, untread