ineffective
🇺🇸
/ˌɪnɪˈfektɪv/
🇬🇧
/ˌɪnɪˈfektɪv/
adjective
R
not producing the desired result; not working well
The teacher found that using punishments was ineffective in encouraging good behavior.
老師發現使用懲罰在鼓勵良好行為上是無效的。
translation
無效的