The word ligaments 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: 16
Highest Scoring Words With Friends™ Play In The Letters ligaments
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Seven Letter Word Alert: (46 words)
aiglets, ailment, aliment, anglist, elastin, elating, enigmas, entails, gamiest, gelatin, geminal, genials, genital, glisten, gmelina, inmates, laments, lasting, leasing, ligates, magnets, maligns, malting, mangles, mantels, mantles, matings, melting, mingles, mintage, nailset, netmail, salient, salting, sealing, seaming, seating, seminal, sigmate, singlet, slating, tagline, tangles, teaming, teasing, tingles