waka jumpingEnglishOxford Dictionary of Englishwaka jumping /ˈwakə ˌdʒʌmpɪŋ / ▸ noun [mass noun] New Zealand English informal the action or practice of an MP leaving their political party during a parliamentary term: there has been public disquiet over waka-jumping by MPs over the previous decade [as modifier] he's backing the reintroduction of the waka-jumping legislation. – ORIGIN early 21st century: from waka + jumping.
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EnglishOxford Dictionary of English