The word anticoagulant 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 anticoagulant
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Seven Letter Word Alert: (35 words)
alicant, anginal, angulon, antlion, atoning, auction, cannoli, cannula, cantata, canting, catalog, cattail, catting, caution, cingula, cloning, coaling, coating, contain, cutting, gluonic, glutton, lancing, loaning, lunatic, nautica, nutting, outgain, tactual, tailgun, tauting, touting, unalign, uncling, unction