/ɪnˈvælɪdeɪt/ – Verb
Definition: làm mất hiệu lực, vô hiệu hóa, làm mất giá trị, thừa nhận không có hiệu lực.
A more thorough explanation: To invalidate means to make something legally void or null, especially by showing that it is not valid or legally binding.
Example: The court ruled that the contract was invalid because it was signed under duress, thus invalidating any obligations outlined within it.