invalid
🇬🇧 UK/ˈɪnvəlɪd/🇺🇸 US/in'vælid/
IELTSTOEFLB2
Definitions
adj.
Not legally or logically acceptable; not true or correct.
无效的;不合逻辑的
n.
A person who is weakened or disabled by chronic illness or injury.
病弱者,残疾人
v.
To discharge someone from military service due to injury or illness.
因伤病使退役
🧩 Root Breakdown
Root-derivedCommon Collocations
- 1.invalid argument无效的论证
- 2.invalid claim无效的主张
Example Sentences
- 1.
The defendant's alibi was declared invalid due to lack of evidence.
- 2.
An invalid argument cannot support the conclusion in a logical debate.