The word milliequivalent 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: 36
Highest Scoring Words With Friends™ Play In The Letters milliequivalent
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Seven Letter Word Alert: (30 words)
ailment, aliment, alltime, antique, elative, eluvial, emulant, emulate, ilvaite, initial, inquiet, invitee, limelit, lineate, matinee, militia, miniate, mullite, netmail, nutmeal, quieten, quillet, tequila, veinlet, veinule, velamen, villain, vinelet, vitamin, vitelli