The word ghostliness 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: 17
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (55 words)
egoists, elogist, eloigns, english, enlight, enlists, glioses, glisten, glosses, histone, hogties, holiest, hostels, hostess, hostile, hosting, hotline, hotness, ingests, insoles, isohels, legions, lengths, lesions, lessons, lighten, lingoes, lioness, lionets, listens, longest, longish, losings, nosiest, osseins, session, shingle, shoeing, signets, silents, singles, singlet, sinless, sleighs, sleight, slights, sloshes, sonless, stogies, stonish, thiones, tingles, tinsels, tonsils, tossing