The word marbleising 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: 21
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (89 words)
airings, airline, aisling, alibies, aligner, amblers, ambling, ambries, anglers, arising, bailing, balmier, bangers, bangles, beaming, bearing, biasing, bigrams, bingers, blamers, blaming, blaring, brangle, enigmas, erasing, gainers, gambler, gambles, garbles, geminal, genials, gerbils, girlies, girnels, gmelina, gremlin, imagers, imagine, lairing, lambing, learing, leasing, lesbian, limbers, lingers, mailers, mailing, maligns, mangers, mangier, mangler, mangles, manlier, marbles, margins, marines, marlins, mineral, mingler, mingles, mirages, nailers, nimbler, railing, raising, rambles, realign, realism, reaming, regains, remails, remains, renails, risible, sailing, sealing, seaming, searing, seminal, seminar, sibling, similar, siriema, sirname, slimier, sliming, slinger, smilier, smiling