Level 5 · word 11,011 of 20,000
invalid
/ɪnˈvælɪd/
American
- adj. 无效的
- adj. 有病的
- Definition
- adj. not officially or legally acceptable
- adj. in poor health
- Example
- The old ticket was invalid because the concert date had passed.
- 那张旧票已经失效了，因为演唱会的日期已经过了。
Word familyvalid-