The word bilaterality 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: 19
Highest Scoring Words With Friends™ Play In The Letters bilaterality
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Seven Letter Word Alert: (32 words)
abettal, ability, airable, alertly, allayer, arylate, battery, battier, battler, bilayer, biliary, bitrate, bittier, braille, brittle, irately, labiate, lateral, liberal, liberty, literal, littler, ratbite, rattail, reality, retally, tallier, tarball, tearily, terabit, tertial, triable