The word depilator 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: 14
Highest Scoring Words With Friends™ Play In The Letters depilator
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Seven Letter Word Alert: (29 words)
adopter, delator, dilater, dilator, diopter, dioptre, dipolar, droplet, leopard, leotard, lipread, opiated, paroled, parotid, peridot, piloted, pirated, plaited, politer, predial, preload, readopt, repilot, replait, tadpole, toprail, trailed, tripled, tripole