The American Language / A Preliminary Inquiry into the Development of English in the United States

by H. L. Mencken

O.K., [23], [161].

okeh, [161].

Old Bullion, [33].

Old Hickory, [33].

Old Stick-in-the-Mud, [86].

oleo, [160].

oleomargarine, [160], [165].

Olson, [271].

omelet, [257].

omnibus-bill, [33], [83], [107], [310].