🔍 Tìm kiếm từ vựng
invalid
Adjective
không hợp lệ, vô hiệu
officially or legally unacceptable
"The warranty on the product became invalid after the customer attempted to repair it themselves ."
to invalidate
Verb
làm mất hiệu lực, bác bỏ
to prove that something is incorrect or flawed, making it not acceptable or reliable
"She invalidates faulty arguments during debates ."
invalid
Adjective
không hợp lệ, không có cơ sở
logically flawed or unsupported by evidence
"The professor pointed out that the student 's theory was invalid due to a lack of scientific proof ."