Nullify



GRE 蓝宝 Barron

解释

GRE 红宝书

• v. 使无效; 取消
• ［英］ v. 使无效 ( invalidate; annul) ; 取消 ( to cancel out)
• ［记］ null ( 无) +ify -> 使...无 -> 取消
• ［同］ 同根词: nullity ( 无效) ; nulliparous ( 未生育过的)
• ［例］ a claim nullified by the cour

Webster Collegiate

transitive verb (-fied; -fying)

• Etymology: Late Latin nullificare, from Latin nullus
• Date: 1595
• 1. to make null; especially to make legally null and void
• 2. to make of no value or consequence
• Synonyms:
  • nullify, negate, annul, abrogate, invalidate mean to deprive of effective or continued existence. nullify implies counteracting completely the force, effectiveness, or value of something <a penalty nullified the touchdown>. negate implies the destruction or canceling out of each of two things by the other<the arguments negate each other>. annul suggests making ineffective or nonexistent often by legal or official action<the treaty annuls all previous agreements>. abrogate is like annul but more definitely implies a legal or official act<a law to abrogate trading privileges>. invalidate implies making something powerless or unacceptable by declaration of its logical or moral or legal unsoundness<the court invalidated the statute>.

记忆

nolli+parous初产妇 parous经产妇

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