The word bilingualism 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™ Plays In The Letters bilingualism
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Seven Letter Word Alert: (29 words)
abusing, aisling, albumin, alliums, ambling, amusing, bailing, balling, biasing, billing, billman, blaming, bulimia, bulling, gallium, gumball, lambing, lingual, lugsail, mailing, maligns, mauling, milling, minibus, mulling, sailing, sibling, sliming, smiling