The word hemimetabolous 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: 27
Highest Scoring Words With Friends™ Play In The Letters hemimetabolous
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Seven Letter Word Alert: (72 words)
ablutes, abolish, albites, amulets, astilbe, atheise, atheism, atomise, atomism, auletes, bailout, beamlet, bemauls, beslime, betimes, betoils, bimetal, bismuth, blemish, blueish, boletes, boomlet, bootees, bummest, eluates, embalms, emblems, embolus, emulate, halibut, halites, hamlets, heliums, helmets, holiest, holmium, homiest, hostile, humbles, humites, isolate, libates, loathes, loutish, maltose, mismate, mobiles, moolahs, mumbles, mutable, oleates, omelets, oolemma, oolites, ooliths, osteoma, outlies, outsail, outsole, seaboot, shamble, stoolie, stumble, subitem, sublime, summate, tabooli, taboule, thimble, timbale, tumbles, useable