unrepeatable Synonyms

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