The word allegoriser 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: 15
Highest Scoring Words With Friends™ Play In The Letters allegoriser
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Seven Letter Word Alert: (25 words)
aerogel, alleger, alleges, allegro, areoles, earlier, elogies, gaolers, glories, goalies, gorilla, greaser, griller, grilles, lorries, rallies, realers, realise, rearise, rearose, regears, reliers, rerolls, rollers, seagoer