The word matriculate 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: 19
Highest Scoring Words With Friends™ Play In The Letters matriculate
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Seven Letter Word Alert: (40 words)
actuate, amateur, arcuate, article, auricle, calumet, caramel, cattail, cattier, citrate, claimer, clatter, climate, clitter, clutter, curtail, cutrate, lactate, lattice, macular, mailcar, maltier, marital, marlite, martial, metical, miracle, muriate, rattail, recital, reclaim, tactile, tactual, teacart, tertial, titular, tumeric, uraemia, uraemic, uralite