The word unchivalrously 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: 30
Highest Scoring Words With Friends™ Play In The Letters unchivalrously
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Seven Letter Word Alert: (65 words)
acyloin, anchors, anchovy, archons, arillus, callous, charily, chloral, chlorin, chorals, chrysin, chylous, clarion, clayish, collars, collins, cornily, crayons, curials, curious, cushion, halcyon, horsily, hryvnia, insular, ischury, loculus, lousily, lyrical, nourish, oculars, oilcans, olivary, oscular, raucous, raunchy, rosalic, ruinous, saucily, saviour, savoury, scarily, scholar, schorly, shrilly, slouchy, sunlily, surlily, synarch, synovia, unchair, uncoils, uncurls, uncurly, unrolls, unsully, urachus, urchins, urinals, usually, vacuous, various, varnish, virally, vocally