unrepeatable Synonyms

unquotable made only once one-time one-of-a-kind one-off unusual unparalleled unique unexampled special solo irreplaceable irreproducible limited to a single time happens only once happening only once just a one-off done only once unreproducible unrepeated once-in-a-lifetime like no other solitary sole singular foul extraordinary exclusive exceptional distinctive distinct definite certain amazing foul-spoken incomparable individual singleton single rare particular only once lone isolated inimitable alone