Synonyms of unrepeatable

Adjective

1. unrepeatable (vs. repeatable), unquotable (vs. quotable)

usage: not able or fit to be repeated or quoted; "what he said was funny but unquotable"

2. unrepeatable, unreproducible (vs. reproducible), irreproducible

usage: unique; "dogs and mice and flies are as unrepeatable as men are"- Theodosius Dobzhansky