The word malignments 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: 22
Highest Scoring Words With Friends™ Play In The Letters malignments
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Seven Letter Word Alert: (61 words)
aiglets, ailment, aliment, ammines, anglist, antigen, elastin, elating, enigmas, entails, gamiest, gelatin, geminal, genials, genital, gentian, glisten, gmelina, inmates, laments, lasting, leaning, leasing, lemming, lensing, ligates, lineman, linnets, magnets, mailmen, maligns, malting, mangles, mantels, mantles, matings, meaning, melanin, melting, mingles, mintage, mismate, misname, nailset, nesting, netmail, salient, salting, sealing, seaming, seating, seminal, sigmate, singlet, slating, tagline, tangles, teaming, teasing, tensing, tingles