The word microsurgeries 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: 23
Highest Scoring Words With Friends™ Play In The Letters microsurgeries
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Seven Letter Word Alert: (71 words)
cerises, ceriums, cesiums, courier, courser, courses, crosier, crosser, cruiser, cruises, currier, curries, cursers, cursors, egoisms, germier, grimier, grocers, grosser, grouser, grouses, guesser, isomere, isomers, meioses, meiosis, mercers, mercies, mergers, merrier, messier, mirrors, miscues, misuser, morgues, mossier, mousers, mousier, recross, recures, recurse, recuses, regimes, regress, reissue, remiges, remorse, rescore, rescuer, rescues, resumer, resumes, resurge, reurges, rigours, ruesome, scorers, scourer, scourge, scrouge, securer, secures, seismic, serious, soirees, sorrier, sources, sucrose, surgers, surmise, uromere