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invalidate

nullify / disprove / void / dismiss
Transitive Verb
past: invalidatedpp: invalidateding: invalidating

This term carries a strong sense of negation, acting as the direct opposite of validate. In legal or administrative contexts, it describes the formal act of stripping a document of its power or authority, rendering it void. This is a clinical, objective process of cancellation. In psychological or interpersonal contexts, the word takes on a more emotional weight. It describes the act of dismissing or denying the legitimacy of another person's internal state, which often implies a lack of empathy or a power imbalance. In scientific discourse, it refers to the empirical dismantling of a theory through contradictory evidence.

Meanings

Transitive Verb
[~ something]

To make a legal document, contract, or agreement no longer legally binding or valid.

"The judge decided to invalidate the contract due to a lack of signatures."

Transitive Verb
[~ something]

To prove that a theory, argument, or claim is wrong or unsound.

"New evidence from the laboratory was enough to invalidate the previous hypothesis."

Transitive Verb
[~ something]

To make a ticket, voucher, or pass unusable by stamping or marking it.

"Please ensure the conductor invalidates your ticket before you board the train."

Transitive Verb
[~ someone]

To make someone feel that their feelings, opinions, or experiences are not important or legitimate.

"By dismissing her concerns as mere anxiety, he served to invalidate her lived experience."

Related Words

Last Updated: June 12, 2026Report an Error