unreproducible
Impossible to replicate
Unreproducible describes something that cannot be reproduced or replicated.
The term appears most often in scientific contexts, where unreproducible results—findings that other researchers cannot duplicate—raise questions about validity: The study's conclusions were dismissed as unreproducible.
Outside science, it may describe unique events or performances: an unreproducible moment of spontaneous brilliance.
Singular, unrepeated instance
- nonreplicableCannot be duplicated
- unrepeatableImpossible to do again
- nonrecurringOccurring only once
- isolatedSeparated from others
Impossible to imitate
- one-of-a-kindHaving no equivalent
- unparalleledHaving no equivalent
- matchlessHaving no equal
- peerlessHaving no equal
nonpareil · unmatched · distinctive · idiosyncratic · original · bespoke · handcrafted · artisanal
Chance stroke of luck
- outlierDistant data point
- aberrationDeviation from the norm
- glitchMinor system fault
- quirkPeculiar behavioral trait
oddity · irregularity · deviation · anomaly · freak · inconsistency · exception · rarity
Temporary, soon departing
- fleetingPassing very quickly
- momentaryLasting very briefly
- evanescentTending to vanish quickly
- vanishingCeasing to be visible
dissipating · fading · elusive · impermanent · short-lived · passing · evaporating · unrepeated
Cannot be proven
- non-replicableCannot be duplicated
- inconclusiveNot yielding a decision
- unconfirmableCannot be proven true
- invalidatedMade no longer binding
experimental · methodological · statistical · outlier · artifact · confounded · unreliable
one-off
Singular, unrepeated instance
- nonreplicableCannot be duplicated
- unrepeatableImpossible to do again
- nonrecurringOccurring only once
isolated · standalone · solitary · one-time
inimitable
Impossible to imitate
- one-of-a-kindHaving no equivalent
- unparalleledHaving no equivalent
- matchlessHaving no equal
peerless · nonpareil · unmatched · distinctive · idiosyncratic · original · bespoke · handcrafted · artisanal · sui generis
fluke
Chance stroke of luck
- outlierDistant data point
- aberrationDeviation from the norm
- glitchMinor system fault
quirk · oddity · irregularity · deviation · anomaly · freak · inconsistency · exception · rarity · inexplicable
transient
Temporary, soon departing
- fleetingPassing very quickly
- momentaryLasting very briefly
- evanescentTending to vanish quickly
vanishing · dissipating · fading · elusive · impermanent · short-lived · passing · evaporating · unrepeated
unverifiable
Cannot be proven
- non-replicableCannot be duplicated
- inconclusiveNot yielding a decision
- unconfirmableCannot be proven true
invalidated · experimental · methodological · statistical · outlier · artifact · confounded · unreliable
unreproduciblereproducible
Able to be duplicated
replicable · duplicable · duplicatable · repeatable · consistent
unreproducibleconsistent
Not varying or contradicting
reliable · repeatable · predictable · dependable · stable
produce, product, production, producer, productive, reproduce, reproduction, reproduced, reproductive