English-English Dictionary

Meaning of the word invalid in English

What does invalid mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

invalid

US /ɪnˈvæl.ɪd/
UK /ɪnˈvæl.ɪd/
"invalid" picture

Noun

1.

a person made weak or disabled by illness or injury

Example:
•
The nurse helped the invalid to sit up in bed.
•
He spent his last years as an invalid, confined to a wheelchair.
Synonym:
disabled personsick personinfirm personpatientconvalescent

Adjective

1.

not valid; not effective or legally binding

Example:
•
The contract was declared invalid due to a technicality.
•
Your password is invalid. Please try again.
Synonym:
nullvoidunlawfulillegitimateunsound
Synonym:
valideffectivelegal
2.

not based on truth or fact; fallacious

Example:
•
His argument was dismissed as invalid.
•
The conclusion drawn from the flawed data was invalid.
Synonym:
fallaciousunsoundillogicaluntruefalse
Synonym:
validsoundlogicaltruefactual
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Related Word:
invalidationinvalidate