unduplicatable

Cannot be copied

Unable to be duplicated or reproduced.

The word emphasizes that something is singular or unique beyond the possibility of copying: The chemistry between those two actors was unduplicatable.

Often interchangeable with unreplicable or irreplaceable, though unduplicatable specifically stresses the impossibility of making a copy rather than the difficulty of substitution.

inimitable

peerless

Having no equal

unrivaled · incomparable · unmatched · unequaled · unexcelled · supreme · preeminent · superlative · transcendent · exceptional

ephemeral

fleeting

Passing very quickly

unrepeatable · nonrecurring · one-time · lightning in a bottle · serendipitous · spontaneous · improvised · unscripted · live performance · first take

authentic

original

First or inventive

verified · authenticated · unforged · unfalsifiable · tamper-proof · holographic · watermarked · signed · handcrafted · artisanal

irreplaceable

indispensable

Utterly required, irreplaceable

treasured · cherished · essential · vital · irretrievable · unrecoverable · unreproducible · one-time · singular · unique specimen

proprietary

patented

Granted exclusive manufacturing rights

classified · confidential · trade secret · encrypted · secured · restricted · exclusive · licensed · intellectual property · formula

Opposites
reproducibility

unduplicatableduplicatable

Able to be copied

reproducible · replicable · copyable · clonable · duplicable

uniqueness/commonness

unduplicatablecommonplace

Unremarkable and frequent

ordinary · generic · common · standard · run-of-the-mill

Family

duplicate, duplicatable, duplicated, duplicates, duplicating, duplication, duplications, duplicative, duplicator

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G