The word complainants 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 complainants
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Seven Letter Word Alert: (68 words)
actions, alicant, amnions, anaptic, animals, anoints, antlion, atomics, atonias, atonics, campion, cannoli, cantons, capital, capitol, capstan, captain, caption, cations, catnaps, catnips, coalman, coalpit, coastal, coatman, contain, impacts, impalas, impasto, implant, incants, inclasp, laminas, lipomas, maniacs, mansion, masonic, misplan, napalms, nations, nominal, nonmail, nonslip, oilcans, optical, optimal, palmist, patinas, plasmin, plasmon, plastic, postman, potamic, psalmic, saltpan, saponin, satanic, scatoma, somatic, spacial, spatial, stamina, stannic, stoical, tampons, tapioca, topical, topsail