Definitions

1. 1. to fail
2. 2. to lose effectiveness

Components

• 失 shī – to lose
• 效 xiào – effect

Related Words

• 失效日期 shī xiào rì qī – expiry date (of document)

Word Lists

• 2021 Framework Levels 7-9
• BCT Level 1
• HSK 3.0 Levels 7-9