Definition of Invalid
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(a.) Of no force, weight, or cogency; not valid; weak.
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(a.) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.
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(a.) A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.
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(n.) Not well; feeble; infirm; sickly; as, he had an invalid daughter.
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(v. t.) To make or render invalid or infirm.
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(v. t.) To classify or enroll as an invalid.
Homophones of Invalid
No Homophones Found.