The word overarching 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: 23
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (42 words)
angrier, arching, archive, carrion, carving, carvone, chagrin, chainer, changer, charger, charier, chevron, choragi, choregi, choring, coinage, coreign, cornier, craving, cringer, earring, echoing, grainer, groaner, hearing, heaving, herring, hoarier, hornier, inreach, ironage, oranger, organic, overran, rancher, rangier, rearing, reaving, rechain, roaring, vearing, vinegar