invalid
1in·val·id
adjective \(ˌ)in-ˈva-ləd\Definition of INVALID
: not valid: a : being without foundation or force in fact, truth, or law <an invalid assumption> <declared the will invalid> b : logically inconsequent
— in·val·id·ly \-lē\ adverb
Origin of INVALID
Latin invalidus weak, from in- + validus strong — more at valid
First Known Use: 1542
Rhymes with INVALID
2in·va·lid
adjective \ˈin-və-ləd, British usually -ˌlēd\Definition of INVALID
1
: suffering from disease or disability : sickly
2
: of, relating to, or suited to one that is sick <an invalid chair>
Origin of INVALID
Latin & French; French invalide, from Latin invalidus
First Known Use: 1642
3invalid
noun \same as 2\Definition of INVALID
: one who is sickly or disabled
Examples of INVALID
- Her husband has become an invalid.
First Known Use of INVALID
1701
4in·va·lid
transitive verb \ˈin-və-ləd, -ˌlid, British usually -ˌlēd or ˌin-və-ˈlēd\Definition of INVALID
1
: to remove from active duty by reason of sickness or disability
2
: to make sickly or disabled
First Known Use of INVALID
1787
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