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To begin your search, go to the alphabetical index below and click on the first letter of the word you are searching for.

valid, invalid

Valid means “factual,” “relevant,” “appropriate” or “legally binding.”

  • Raymond’s suggestions were valid because they were based on sound reasoning.
  • The university deemed serious illness a valid reason for not writing a final exam.
  • That 1-800 telephone number is not valid outside Canada.
  • The car warranty is valid for two years or 100,000 kilometres.

The opposite of valid is invalid (pronounced in-VA-lid).

  • Will they accept an invalid (expired) passport as identification?

A person who is chronically weak or sick is an invalid (pronounced IN-vuh-lid).

  • The clinic now provides round-the-clock care for invalids.