The word holometabolies 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: 24
Highest Scoring Words With Friends™ Play In The Letters holometabolies
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Seven Letter Word Alert: (54 words)
abolish, albites, alltime, astilbe, atheise, atheism, atomise, ballets, ballots, beamlet, bellies, beslime, betimes, betoils, billets, bimetal, blemish, boletes, boomlet, bootees, halites, hamlets, helmets, holiest, hollies, homiest, hostile, isolate, libates, loathes, lobelet, lobelia, losable, mallets, maltose, millets, mistell, mobiles, moolahs, oleates, omelets, oolites, ooliths, osteoma, seaboot, shallot, shamble, stoolie, tabooli, tallies, tallish, tellies, thimble, timbale