invalid

8 definitions • 9 examples

An invalid document, ticket, law, etc. is not legally or officially acceptable:

I'm afraid your driving licence is invalid in Eastern Europe.

An invalid opinion, argument, etc. is not correct, usually because it is not logical or not based on correct information:

an invalid argument

someone who is sick and unable to take care of himself or herself, especially for a long time:

Is the invalid in bed?

not true or acceptable, or not correctly thought out:

The results of the election were declared invalid by the court.

a person who is ill or injured for a long time and usually has to be cared for by others:

My dad’s mother is an invalid, and she lives with my aunt and uncle.

not legally or officially acceptable:

an invalid document/passport/licence

be declared/deemed/ruled invalid Insurance is ruled invalid if the report is not received within 30 days of the theft.

not correct, or not based on correct information:

A small number of messages bounced back from invalid e-mail accounts.

not recognized or accepted by a computer:

invalid data