The word incompetencies 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: 28
Highest Scoring Words With Friends™ Play In The Letters incompetencies
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Seven Letter Word Alert: (78 words)
cements, cenotes, coesite, cometic, compete, conceit, concept, concise, connect, consent, ectopic, emetics, eminent, empties, enemies, entices, eosinic, epicene, episome, epitome, iconism, iconist, incense, incites, incomes, inosine, inosite, inspect, intense, intones, itemise, meconic, meiotic, menisci, mention, minions, miocene, miscite, miscoin, moisten, mopiest, nepotic, nominee, nonepic, notices, octenes, onestep, onetime, openest, pectens, pectins, pectose, pennies, pension, pentene, pentose, peonies, picnics, pieties, pietism, pimento, pinenes, pinions, poetics, poetise, pontine, postmen, poteens, psionic, sceptic, science, section, somitic, spinnet, steepen, tenpins, tension, tiepins