The word archespores 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: 19
Highest Scoring Words With Friends™ Play In The Letters archespores
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Seven Letter Word Alert: (91 words)
acerose, archers, asperse, careers, carhops, carpers, cashers, chaoses, chasers, cheaper, cheapos, coarser, coherer, coheres, corpses, crasher, crashes, crasser, creaser, creases, crosser, echoers, eparchs, erasers, escaper, escapes, escarps, harpers, heapers, hearers, hearses, hoarser, parches, parsecs, parsers, peaches, percher, perches, phraser, phrases, poacher, poaches, porches, prerace, presser, process, rashers, raspers, reacher, reaches, reapers, rearose, rechose, recross, reheaps, rehears, repaces, reparse, reperch, reposer, reposes, repress, rerapes, rescope, rescore, reshape, reshare, reshoes, reshore, resorps, respace, roaches, scapose, scarers, scorers, scraper, scrapes, serapes, seraphs, shapers, sharers, sharper, shearer, sherpas, soapers, soarers, spacers, sparers, sparser, spearer, spheres