(n.) An independent person who refuses to be subjected to rules or norms; originally, a cattle owner who neglected to brand his cattle\.

Bohemian Brahman Indian buffalo agitator alien ass aurochs beat beatnik beef beef cattle beeves bigot bison bitter-ender bossy bovine bovine animal brawler breakaway buffalo bull bullethead bullock calf carabao case cattle character cow crackpot crank critter dairy cattle dairy cow deviant diehard dissenter dogie dogmatist donkey dropout eccentric extremist fanatic far out flower child freak free and easy fringy frondeur hardnose heifer heretic heretical hermit heterodox hippie hobo hornless cow informal insubordinate insurgent insurrectionary insurrectionist insurrecto intransigeant intransigent kine kinky kook last-ditcher leppy lone wolf loner malcontent meshuggenah milch cow milcher milk cow milker misfit mule muley cow muley head musk-ox mutineer natural neat nonconformist nonjuror not cricket not done not kosher nut odd fellow oddball oddity offbeat original outsider ox oxen pariah perverse fool pighead positivist purist queer duck queer fish queer specimen rara avis rebel revolter revolutionary revolutionist rioter screwball sectarian sectary solitary standpat standpatter steer stickler stirk stot subversive swinger traitor tramp type ugly duckling unconformist unconventional unfashionable unorthodox way out wisent yak yearling yippie zealot zebu