The word vasectomizes 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: 31
Highest Scoring Words With Friends™ Plays In The Letters vasectomizes
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Seven Letter Word Alert: (34 words)
actives, ascites, atomics, atomise, atomize, azotise, coesite, cosiest, coziest, easiest, eczemas, emetics, emotive, evocate, icemass, mascots, massive, maziest, meioses, miscast, misseat, misvote, mitoses, mosaics, motives, octaves, oecists, seamost, siamese, sitcoms, somatic, somites, stomies, zemstvo