shī​xiào HSK7

to become invalid

Senses

失效 shī​xiào to become invalid

To lose effectiveness; to become void or expire, such as a passport or contract.

失效 shī​xiào failure

(Of a machine, component, or system) a loss of ability to perform a required function; a breakdown.

References

antonym 失效/失效 生效/生效
antonym 生效/生效 失效/失效
see 无效/無效 失效/失效