The word archetypes 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: 20
Highest Scoring Words With Friends™ Plays In The Letters archetypes
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Seven Letter Word Alert: (51 words)
carpets, cerates, chapter, chaster, cheaper, cheater, creates, cyphers, ectypes, eparchs, eparchy, escaper, etchers, hapters, heapers, heaters, hectare, parches, patches, peaches, perches, preachy, precast, preheat, reaches, recheat, reheaps, reheats, repaces, repaste, repatch, repeats, reshape, respace, respect, retapes, retches, reteach, retypes, scepter, sceptre, scyther, specter, spectra, spectre, starchy, teacher, teaches, tephras, therapy, yachter