invalidate

C2+ Topic:Cause, Change & Process

US /ɪnˈvælɪdeɪt/ UK /ɪnˈvælɪdeɪt/ See IPA manual

verb

Meanings

1

verb
to make something no longer valid or legally binding

A single false answer can invalidate the entire survey.

Thesaurus

Synonyms

1 verb · to make something no longer... nullify void annul negate cancel rescind quash

Opposites

validate confirm ratify

Word family

Derived forms invalidationinvalidator

Related forms invalid valid validate

Etymology

From in- 'not' plus validate, from Latin validus 'strong' (from valere 'to be strong'); patterned on invalid.

validus Latin valere Latin

View etymology graph ->

Topics

Cause, Change & Process Word Formation & Derivatives

# invalidate

**Type:** Word
**Level:** C2+
**Part of speech:** verb
**IPA (US):** ɪnˈvælɪdeɪt
**IPA (UK):** ɪnˈvælɪdeɪt

## Meanings
1. to make something no longer valid or legally binding

## Examples
- A single false answer can invalidate the entire survey.

## Synonyms
- nullify
- void
- annul
- negate
- cancel
- rescind
- quash

## Antonyms
- validate
- confirm
- ratify

## Derived Forms
- invalidation
- invalidator

## Related Forms
- invalid
- valid
- validate

## Roots and Affixes
- Root: validus
- Root: valere

## Etymology
From in- 'not' plus validate, from Latin validus 'strong' (from valere 'to be strong'); patterned on invalid.

## AI Etymology
Invalidate comes from in- 'not' plus validate, from Latin validus 'strong' (from valere 'to be strong'); patterned on invalid. The form is best read as a historical transfer or inheritance, with its older language material carrying the main semantic load. As a verb, it means "to make something no longer valid or legally binding", so the modern sense keeps the older action or relation visible. Relevant historical forms include Latin validus and Latin valere. Derivative forms include invalidation, invalidator; related words include invalid, valid, validate.

## Topics
- Cause, Change & Process
- Word Formation & Derivatives

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invalidate

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