invalidate
UK/ɪn'vælɪdeɪt/US/in'vælideit/
TOEFLB2
Definitions
v.
To make something no longer valid or legally binding
使无效，使作废
v.
To prove an argument or claim to be wrong
推翻，证明……站不住脚
Root Breakdown
Root-derivedin-not, opposite of
+
validatestrong, worth, value
=invalidate
in- (not) + validate = 'to make not valid.' The opposite of validate: to cancel out or knock down.
Common Collocations
- 1.invalidate a contract使合同无效
- 2.invalidate the warranty使保修失效
- 3.invalidate an argument推翻论证
Example Sentences
- 1.
One counterexample can invalidate the whole theory.
- 2.
Tampering with the seal will invalidate the warranty.