The word relevances 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
Seven Letter Word Alert: (27 words)
careens, caverns, cereals, cleaner, cleanse, cleaver, cleaves, elevens, enclave, enslave, lancers, laveers, leaners, leavens, leavers, recanes, reclean, relaces, release, rescale, reveals, scalene, sclerae, several, valence, veneers, veneral