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TOEFL IELTS BNC: 7986 COCA: 17470
invalid
adjective /ɪnˈvælɪd/
Related words
  1. 1
    not legally effective (法律上)无效的,作废的

    Your ticket is invalid without the airline's official stamp. 没有该航空公司的正式图章,你的机票就是无效的。

    The vote has been declared invalid and another election scheduled. 这次投票被宣布无效,又安排了一场选举。

     Synonyms and related words
  2. 2
    not based on facts, evidence, or good judgment 无根据的;无证据的;无道理的
     Synonyms and related words
    Not definite or based on fact: apparently, supposed, alleged...
  3. 3
    computing not acceptable as a computer instruction or operation (命令或操作)无效的
     Synonyms and related words
    Relating to computer software, systems and equipment: adaptive, antivirus, asynchronous...
invalid
noun [C] /ˈɪnvəlɪd/
singularinvalid
pluralinvalids
  1. someone who is ill or injured and is unable to look after themselves 病弱者;伤残者

    He had been an invalid for many years. 他多年患病,无法照顾自己。

     Synonyms and related words
    People who are ill or have a medical condition: ambulatory, amnesiac, anorexic...
    1. a.
      [only before noun] relating to someone who is ill or injured, especially permanently 久病的;残疾的;(尤指)永久残疾的

      He lives with his invalid mother. 他和残疾的母亲住在一起。

       Synonyms and related words
invalid
verb /ˈɪnvəlɪd/
present tense
I/you/we/theyinvalid
he/she/itinvalids
present participleinvaliding
past tenseinvalided
past participleinvalided

phrase


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