Invalid
/ɪnˈvælɪd/
Definitions
2 meaningsNot true, legitimate, or binding; having no force or effect; not acceptable or effective.
/ɪnˈvælɪd/
Not legally or officially acceptable.
The passport was declared invalid because it had expired.
💡 Simply: Imagine you try to use a coupon at the store, but the cashier says it's 'invalid.' That means it's not good for getting a discount. It's not accepted.
👶 For kids: If something is invalid, it means it's not right or doesn't count.
More Examples
The evidence presented was deemed invalid by the jury.
Her arguments were considered invalid due to logical fallacies.
How It's Used
"The judge ruled that the contract was invalid due to a lack of proper signatures."
"The doctor declared the test results invalid because the sample was contaminated."
Weakened or disabled by illness or injury.
/ɪnˈvælɪd/
Suffering from an illness or disability.
She was an invalid after the accident, requiring constant care.
💡 Simply: Imagine someone who is sick or hurt and can't do all the things they usually do. They might be described as an 'invalid,' because their body isn't working properly.
👶 For kids: If someone is invalid, it means they are sick or hurt and need help.
More Examples
The hospital has a special ward for invalid patients.
He spent the last years of his life as an invalid, confined to a wheelchair.
How It's Used
"The nursing home cared for elderly and invalid patients."
"He was discharged from the army as an invalid due to his injuries."
Synonyms
Idioms & expressions
invalid argument
A faulty or flawed argument that does not logically follow from its premises.
"The politician presented an invalid argument to support his claim."
From Late Latin *invalidus*, meaning 'not strong, weak', from *in-* (not) + *validus* (strong, valid).
The term 'invalid' has long been used to describe those unable to work due to illness or injury, particularly in the context of veterans and those receiving care.
Memory tip
Think of 'invalid' as something that isn't 'valid' – it doesn't hold up.