The word circulative 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: 23
Highest Scoring Words With Friends™ Play In The Letters circulative
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Seven Letter Word Alert: (23 words)
activer, article, auricle, calcite, caviler, ciliate, circlet, circuit, clavier, crucial, culvert, curtail, cuticle, icteric, ilvaite, recital, rivulet, trivial, uralite, vaulter, velaric, victual, virtual