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invalid

/ɪnˈvæl.ɪd/noun, verb, adjective3 syllables

Invalid means: having no cogency or legal force.

Synonyms for invalid20

noun, as in someone who is incapacitated by a chronic illness or injury

shut-in

verb, as in injure permanently

disable, incapacitate, handicap

adjective, as in having no cogency or legal force

bad, uncollectible, fallacious, unsound, false, spurious, invalidated, nullified, null, void, sophistic, sophistical, illegitimate

adjective, as in no longer valid

also used for invalid

disallowed, nonvalid

Includes material from Wiktionary, CC BY-SA 4.0.

Opposites of invalid

What does invalid mean?5

adjective

1

having no cogency or legal force“invalid reasoning”

2

no longer valid“the license is invalid”

verb

1

injure permanently“He was disabled in a car accident”

2

force to retire, remove from active duty, as of firemen

noun

1

someone who is incapacitated by a chronic illness or injury

Definitions from the Open English WordNet, CC BY 4.0.

Invalid in a sentence

  • The contract, if you were forced to sign it, is invalid.CM
  • This agreement is invalid, unless you bring it in black and white.unknown
  • As of tomorrow, this e-mail address will be invalid.CK
  • If you were forced to sign that contract, then it's invalid.CK
  • If you were forced to sign it, the contract is invalid.CK
  • If you were forced to sign the contract, it's invalid.CK
  • The password reset link was invalid, possibly because it has already been used.Nicat
  • From tomorrow this email address will be invalid.unknown

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.

Forms of invalid

as a noun

plural
invalids

as a verb

past tense
invalided
present participle
invaliding
third-person singular
invalids
past participle
invalided