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无效

wú xiào
HSK 3.0 Level 5 Verb Common

Definitions

  1. 1. not valid
  2. 2. ineffective
  3. 3. in vain

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Word relationships

Antonyms

1 item
有效
yǒu xiào

effective

General opposite for valid or effective

Related words

1 item
无用
wú yòng

useless

Useless or in vain, close in meaning

Synonyms

1 item
作废
zuò fèi

to become invalid

When something becomes null and void, like a ticket or document

Usage notes

Common mistakes

无效 is an adjective, not a verb. You cannot say 我无效这个卡 (I invalidate this card); use 使…无效 (shǐ ... wúxiào) to express causing something to become invalid.

Example Sentences

1 shown
这张票已经 无效 了。
This ticket is already invalid.

AI-generated examples are marked with this icon.

Words Containing 无效

毫无效果
háo wú xiào guǒ

to no avail

Child Words of 无效

无
wú

not to have

效
xiào

effect