The word letterheads 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: 15
Highest Scoring Words With Friends™ Play In The Letters letterheads
:
Seven Letter Word Alert: (84 words)
adheres, alerted, altered, athlete, dealers, dearest, dearths, deerlet, delates, deleter, deletes, deltate, earthed, elaters, halters, hardest, hatreds, hatters, headers, headset, healder, healers, hearsed, hearted, heaters, heralds, lathers, leaders, leadeth, leashed, leather, letters, rattled, rattles, realest, reasted, redates, redeals, redealt, reested, reheats, reheels, related, relates, release, restate, retaste, sedater, seethed, seether, settled, settler, shatter, sheared, sheered, sheeted, sheeter, shelter, slather, slatted, sleeted, starlet, started, startle, stealer, stealth, steeled, steered, tasered, teeters, teethed, teether, teethes, tethers, theater, theatre, thereat, threads, threats, trashed, treadle, treated, treelet, trestle