The word appendicular 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: 25
Highest Scoring Words With Friends™ Play In The Letters appendicular
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Seven Letter Word Alert: (67 words)
adrenal, apparel, applaud, applied, applier, auricle, cairned, caldera, caliper, candela, candler, canulae, canular, carinae, carinal, cauline, clapped, clapper, cleanup, clipped, clipper, cranial, crapped, crappie, cripple, decalin, decrial, diurnal, dulcian, epicarp, include, inducer, inplace, lacunae, launder, lipread, lunaria, nippled, nuclear, nuclide, paenula, panicle, papular, pelican, placard, plainer, plunder, praline, pranced, predial, prepaid, preplan, pulpier, purpled, radical, radicel, radicle, radulae, replica, rippled, unaired, uncaped, uncared, unclear, undrape, unideal, unlaced