via WordNet, Princeton University
sean o'casey
o.k., oak, oas, oasis, oaxaca, oca, ochoa, ochs, ogee, oig, ois, ok, oka, okay, okeh, okey, ooze, oozy, os, os ischii, osage, osaka, osasco, osha, osseous, ouguiya, ouija, ouse, ouzo, ox, oxeye, oz., ozawa
via soundex() Hash Matches
O'casey on Wikipedia
O'casey on Wiktionary
O'casey on Google
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someone who walks in an arrogant manner
balkan, gulf states, double gloucester, caudated, fallen