The word laundromats 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: (41 words)
alarums, almonds, amounts, armload, arousal, artsman, astound, austral, daltons, dormant, dustman, mantras, manuals, marauds, marulas, matador, matrons, modular, mordant, mortals, morulas, mustard, natural, nodular, normals, nostrum, oarsman, outmans, radulas, randoms, roadman, rotunda, rotunds, solanum, stardom, stromal, sultana, traumas, tundras, unloads, unmoral