The word acculturative 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: 26
Highest Scoring Words With Friends™ Play In The Letters acculturative
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Seven Letter Word Alert: (47 words)
accrual, acerval, acicula, activer, actuate, arcuate, article, auricle, avarice, calcite, cattail, cattier, caviler, circlet, citrate, clatter, clavate, clavier, clitter, clutter, crucial, culture, culvert, curtail, cuticle, cutrate, lactate, lattice, rattail, reavail, recital, rivulet, tactile, tactual, teacart, tertial, titular, travail, uralite, valuate, variate, vaulter, velaria, velaric, victual, virtual, vulture