The word leafhoppers 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 leafhoppers
:
Seven Letter Word Alert: (32 words)
apposer, areoles, elopers, felspar, flapper, flasher, flopper, healers, heapers, helpers, herself, hoppers, hoppler, hopples, leapers, loafers, loppers, paroles, peoples, perhaps, plasher, pleaser, poplars, presale, propels, rappels, reflash, reheaps, relapse, repeals, reshape, shopper