negated

Made without effect

Negated is the past tense of negate, meaning to nullify, deny, or make ineffective.

A single mistake can negate hours of work.

In logic, to negate a statement is to assert its opposite—negating "all swans are white" yields "not all swans are white." His apology was negated by his subsequent behavior.

cancelled

nullified

Made legally void

voidedMade legally ineffective
annulledDeclared legally void
invalidatedMade no longer binding

revoked · rescinded · abolished · repealed · abrogated · quashed · undone · overturned · countermanded · reversed

contradicted

refuted

Proved an argument false

counteredResponded to challenge
disputedArgued over, unresolved
challengedDisputed or questioned

opposed · rebutted · contested · debunked · discredited · repudiated · confuted · controverted · gainsaid · belied

logical

falsified

Made deliberately inaccurate

invertedTurned opposite way
reversedFlipped to opposite orientation
oppositeReverse or contrary thing

contrary · antithetical · contradictory · inverse · truth value · proposition · statement · assertion · premise · condition

negated

nullified

refuted

falsified

negated

Opposites

Phrases

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