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  2. /val
  3. /invalid

invalid

🇬🇧 UK/ˈɪnvəlɪd/🇺🇸 US/in'vælid/
IELTSTOEFLB2

Definitions

adj.

Not legally or logically acceptable; not true or correct.

无效的;不合逻辑的

n.

A person who is weakened or disabled by chronic illness or injury.

病弱者,残疾人

v.

To discharge someone from military service due to injury or illness.

因伤病使退役

🧩 Root Breakdown

Root-derived
innot, opposite of
+
valstrong, worth, value
+
idhaving the quality of
=invalid

Common Collocations

  • 1.invalid argument无效的论证
  • 2.invalid claim无效的主张

Example Sentences

  • 1.

    The defendant's alibi was declared invalid due to lack of evidence.

  • 2.

    An invalid argument cannot support the conclusion in a logical debate.

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