无效

not valid / ineffective / in vain

Characters and words in 无效

not to have / no / none / not / to lack / un- / -less
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effect / efficacy / to imitate
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Words with 无效

to no avail / achieving nothing / totally ineffective / to have no effect / to fall flat (esp. of joke or speech that is completely ignored)

Sentences with 无效

无效 currently does not appear in any sentence.
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