The word conceivability 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: 31
Highest Scoring Words With Friends™ Play In The Letters conceivability
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Seven Letter Word Alert: (74 words)
ability, abiotic, aclinic, acolyte, aconite, actinic, acyloin, albinic, albitic, aloetic, avionic, balcony, baloney, bayonet, bicycle, binocle, biolite, bitcoin, bolivia, botanic, cabinet, cacolet, calcine, calcite, ciliate, citable, coalbin, coalite, cocaine, coeliac, colicin, concave, conceal, conceit, conical, convect, convict, cotylae, cyanite, cyclane, cyclone, cynical, elation, iceboat, ilvaite, initial, inocyte, invoice, laconic, lactone, latency, lection, naively, naivety, niobate, niobite, notable, notably, novelty, obviate, oceanic, olivine, ovately, ovinely, tenably, toenail, vaccine, valency, violate, violent, vocable, vocably, vocalic, voltaic