Definitions of invalid:
- noun: someone who is incapacitated by a chronic illness or injury
- verb: force to retire, remove from active duty, as of firemen
- verb: injure permanently
- adjective: having no cogency or legal force
Example: "Invalid reasoning"
- adjective: no longer valid
Example: "The license is invalid"
Search for invalid at other dictionaries: OneLook, Answers.com, Merriam-Webster
Help, Feedback, Customize, Android app, iPhone/iPad app
Copyright © 2013 Datamuse