de buen o mal grado willy-nilly (general); willing or unwilling (general)
K.O. KO (sports
K.O. técnico technical knockout (sports
más o menos thereabout (degree); thereabouts (degree); grosso modo (estimation); roughly speaking (estimation); more or less (estimation)
más o menos sesenta about sixty (number ); sixty or so (number )
o ... o either ... or (general); either ... or (general); or (general); or (general)
O.T.A.N. NATO (military); North Atlantic Treaty Organization (military)
poco más o menos about (estimation); nearly (estimation); some (estimation); around (estimation); almost (estimation); roughly (estimation); approximately (estimation)
quiera o no quiera willy-nilly (general)
quieras o no quieras willing or unwilling (general); willy-nilly (general)