The word cannibalised 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™ Plays In The Letters
Seven Letter Word Alert: (40 words)
abscind, aedilic, alanine, albinic, aliased, alibies, anilide, aniline, anneals, annelid, asinine, balance, biennia, candela, candies, candles, canines, dailies, decalin, denials, diabase, dibasic, disable, incased, incised, incline, indians, indices, inlands, inlines, lacinia, laicise, lesbian, liaised, lindens, nabales, niacins, scandal, scanned, snailed