The word acuminates 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (26 words)
acuates, acumens, amentia, amnesia, amnesic, anaemic, animate, aunties, caesium, cinemas, icemans, inmates, maniacs, minuets, minutes, mistune, munites, nautica, nematic, nutcase, sanctum, satanic, sinuate, stamina, tsunami, unmates