Other

invalid2

Pronunciation: /ɪnˈvalɪd/

Definition of invalid

not valid, in particular:
(especially of an official document or procedure) not legally recognized because it contravenes a regulation or law:the vote was declared invalid due to a technicality
(especially of an argument, statement, or theory) not true because based on erroneous information or unsound reasoning:a comparison is invalid if we are not comparing like with like
(of computer instructions, data, etc.) not conforming to the correct format or specifications.

Derivatives

mid 16th century (earlier than valid): from Latin invalidus, from in- 'not' + validus 'strong' (see valid)

Definition of invalid in the US English dictionary

Nearby words

More results for invalid