The word legations 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: 13
Highest Scoring Words With Friends™ Play In The Letters legations
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Seven Letter Word Alert: (41 words)
agonies, agonise, agonist, aiglets, anglist, elastin, elating, elation, elogist, eloigns, entails, gelatin, gelatos, genials, genital, glisten, goalies, isolate, lasting, leantos, leasing, legions, ligates, lingoes, lionets, longest, nailset, onstage, salient, salting, sealing, sealion, seating, singlet, slating, tagline, tangelo, tangles, teasing, tingles, toenail