The word antilogarithm 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™ Play In The Letters antilogarithm
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Seven Letter Word Alert: (45 words)
airmail, alright, angioma, granola, hailing, halting, harming, hatting, hitting, ignitor, intagli, lairing, laminar, lathing, mailing, malting, marital, martial, martian, martini, matting, migrant, militar, moating, molting, monilia, orating, origami, railing, rainhat, rattail, ratting, rioting, roaming, roiling, rotting, tailing, tangram, thalami, thiamin, tilting, tithing, toiling, tonight, tritoma