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invalid

invalid

69 4.7
Not accepted by law or no longer in effect
  • adjective
  • /ɪnˈvælɪd/
  • Formal
translation icon : nulo
  • Her signature on the document was invalid because it lacked a witness.
  • valid or invalid
  • declare invalid
  • court held invalid

About excuses, both the valid ones and the invalid ones.

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Examples

  • If you do so, the test will be declared invalid.

  • McMichael argued in this case that his contract with Price was invalid because the contract was not mutual.

  • Oh, it says error for site owner, invalid domain for site key.

  • - The lottery is invalid.

  • If all such restrictions were invalid, then many necessary criminal laws would suddenly become inoperative.

    Academic text (2017)
  • You could be basing your decision to act on invalid assumptions.

  • Clearly, the use of this technology as a "lie detector" would be invalid and unethical.

    Academic text (1991)
  • Further, district courts have ruled patents invalid significantly less often after the Federal Circuit's creation.

    Academic text (2017)
  • Therefore, Maryland's tax scheme was invalid under the dormant Commerce Clause.

    Academic text (2017)
  • Of the 280, 56 invitations could not be delivered because of e-mail blocking or invalid addresses.

    Academic text (2008)

Synonyms

unacceptable
vsinvalid
256 3.2

Not good enough or not allowed by rules

is specific to legal or official lack of acceptance rather than general poor quality
not acceptable
vsinvalid
44 2.2

Not allowed by rules and not good enough for standards

is aimed at legal or official unacceptability rather than only unsuitability
illegitimate
vsinvalid
  • Formal
31 6.1

Not allowed by law

is broader, meaning legally or officially unacceptable or not currently in effect
null and void
vsinvalid
  • Formal
12 4.8

Not legally valid or binding

also covers official unacceptability beyond just legal unenforceability
impermissible
vsinvalid
  • Formal
6 7.7

Not allowed by rules, laws, or official standards

focuses more on legal or official invalidity than on mere permission status
prohibited
vsinvalid
  • Formal
1 3.7

Not allowed by law or by an authority

relates instead to being unacceptable or no longer in effect rather than active prohibition
unallowable
vsinvalid
  • Formal
1 6.4

Not allowed by rules or laws

is about being legally or officially unacceptable rather than only rule violation
invalidated
vsinvalid
  • Formal
6.3

Not legally valid and cannot be used in court

is the broader idea of being legally or officially unacceptable or out of effect

Antonyms

477 2.5

Good enough for a particular use or standard

348 3.1

Accepted by law, by an official, or for good reason

How Valid

binding
  • Formal
4.6
valid
348 3.1
invalid
  • Formal
69 4.7
unenforceable
  • Formal
7 7.7

Surface Forms

invalid positive
invalider comparative
invalidest superlative

Morphology

invalid = valid (transparent) = in + valid

The adjective is a regular negative formation meaning 'not valid', which is readily inferable from the base word.

Etymology

Invalid comes from the Latin parts in- 'not' and validus 'strong', the same root as valid. So something invalid is like 'not strong' in law or rules — it is not legally or officially acceptable.