The word mongrelizes 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: 27
Highest Scoring Words With Friends™ Play In The Letters mongrelizes
:
Seven Letter Word Alert: (35 words)
elogies, eloigns, enolize, genomes, girnels, glories, greisen, gremlin, ignores, isomere, leering, legions, lingers, lingoes, lozenge, mingler, mingles, miszone, mongers, mongrel, negroes, reeling, regimen, regimes, regions, relines, remiges, remines, rezones, seeming, semilog, slinger, zeroing, zeroise, zingers