nonrepeated
Not said again
Nonrepeated describes something that occurs only once or hasn't been duplicated: The study excluded nonrepeated observations.
The term appears mainly in technical contexts—statistics, music theory, data analysis—to distinguish singular occurrences from patterns or sequences: nonrepeated digits, nonrepeated measures.
Only one exists
- one-of-a-kindHaving no equivalent
- singularOne in number
- one-timeOccurring only once
- standaloneComplete without attachments
solitary · individual · single · sole · lone · only · exclusive · isolated
Lasting very briefly
- fleetingPassing very quickly
- momentaryLasting very briefly
- transientTemporary, soon departing
- temporaryLimited in duration
short-lived · impermanent · passing · brief · disposable · single-use · one-off
Happening only occasionally
- uncommonSeldom occurring or found
- sporadicOccurring irregularly, infrequently
- occasionalHappening at intervals
- seldomOn few occasions
scarce · sparse · few · scattered · irregular · intermittent · limited · unusual
Never having occurred before
- unparalleledHaving no equivalent
- unmatchedHaving no equal
- incomparableWithout equal or rival
- inimitableImpossible to imitate
irreplaceable · unrivaled · extraordinary · anomalous · aberrant · remarkable · distinctive · novel
unique
Only one exists
- one-of-a-kindHaving no equivalent
- singularOne in number
- one-timeOccurring only once
standalone · solitary · individual · single · sole · lone · only · exclusive · isolated · unitary
ephemeral
Lasting very briefly
temporary · short-lived · impermanent · passing · brief · disposable · single-use · one-off
infrequent
Happening only occasionally
- uncommonSeldom occurring or found
- sporadicOccurring irregularly, infrequently
- occasionalHappening at intervals
seldom · scarce · sparse · few · scattered · irregular · intermittent · limited · unusual · episodic
unprecedented
Never having occurred before
- unparalleledHaving no equivalent
- unmatchedHaving no equal
- incomparableWithout equal or rival
inimitable · irreplaceable · unrivaled · extraordinary · anomalous · aberrant · remarkable · distinctive · novel · original
nonrepeatedrepeated
Done or said again
recurring · repetitive · recurrent · reiterated · duplicated
non, repeat, repeated, repeating, repeats, repeatable, unrepeatable, repeatability, repetition