English synonyms: unique, invaluable, priceless, unrepeatable, one-of-a-kind, incomparable
“Needless to say such irreplaceable material deserves to be studied and catalogued for researchers and students.”
“Jason shows once again why he is such an irreplaceably compelling voice in the blogosphere.”
irregularity · irrelevance · irrelevant · irreparable · irrepressible · irreproachable · irresistible · irrespective
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