The word telegraphs 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 telegraphs
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Seven Letter Word Alert: (51 words)
eaglets, elaters, gathers, gearset, gelates, haglets, halters, hapters, healers, heapers, heaters, heeltap, helpers, largest, lathers, leapers, leather, legates, palters, pargets, pelters, peregal, petrels, plasher, plaster, platers, pleaser, preheat, prelate, presage, presale, realest, reheaps, reheats, relapse, relates, repages, repaste, repeals, repeats, replate, repleat, reshape, respelt, restage, retapes, shelter, slather, stapler, stealer, tephras