unduplicable
Impossible to replicate
Unable to be duplicated or reproduced.
Something unduplicable is one of a kind—whether a moment, an achievement, or an object: The chemistry between those two actors was unduplicable.
The word emphasizes that attempts to copy or repeat would fail.
Irreplicable and unrepeatable convey similar ideas.
Having no equivalent
- heirloomInherited family treasure
- keepsakeItem preserved for sentiment
- pricelessToo valuable to quantify
- invaluableBeyond monetary worth
precious · heritage · antique · treasure · artifact · relic · noninterchangeable · unrepeatable
In short supply
- limitedRestricted in extent
- infrequentHappening only occasionally
- uncommonSeldom occurring or found
- seldomOn few occasions
sporadic · sparse · unusual · exceptional · extraordinary · peculiar · anomalous · aberrant
Having no equal
- peerlessHaving no equal
- unparalleledHaving no equivalent
- nonpareilUnrivaled, beyond compare
- unrivaledHaving no equal
unmatched · unequaled · incomparable · distinctive · original · unprecedented · pioneering · innovative
Obvious; inventor's monopoly
- proprietaryLegally owned, restricted use
- monopolyOne seller, no substitutes
- soleFoot's bottom surface
- nontransferableCannot change hands
restricted · private · confidential · classified · encrypted · privileged · copyrighted · trademarked
one-of-a-kind
Having no equivalent
- heirloomInherited family treasure
- keepsakeItem preserved for sentiment
- pricelessToo valuable to quantify
invaluable · precious · heritage · antique · treasure · artifact · relic · noninterchangeable · unrepeatable · essential
scarce
In short supply
- limitedRestricted in extent
- infrequentHappening only occasionally
- uncommonSeldom occurring or found
seldom · sporadic · sparse · unusual · exceptional · extraordinary · peculiar · anomalous · aberrant · outlier
matchless
Having no equal
- peerlessHaving no equal
- unparalleledHaving no equivalent
- nonpareilUnrivaled, beyond compare
unrivaled · unmatched · unequaled · incomparable · distinctive · original · unprecedented · pioneering · innovative · groundbreaking
patent
Obvious; inventor's monopoly
- proprietaryLegally owned, restricted use
- monopolyOne seller, no substitutes
- soleFoot's bottom surface
nontransferable · restricted · private · confidential · classified · encrypted · privileged · copyrighted · trademarked · licensed
unduplicableduplicable
Able to be copied
reproducible · replicable · repeatable · copyable · clonable
duplicate, duplicable, duplication, duplicator, duplicity, duplicitous, duple, duplex, double