Not surpassable; unable to be surpassed.(adjective)
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Use "unsurpassable" in a sentence
"Thus the new connotations and conceptualizations put forth by the Fathers revitalized the Church's memory of what the Apostles taught, and historical theology today would enable us to revitalize our memory of what the "unsurpassable" Fathers taught."
"Now, this joke almost textually reproduces a circumstance attending the birth of that Earl of Dudley of whom Rogers wrote the epigram which Byron thought "unsurpassable": --"
"Breakfast with its "unsurpassable" coffee was hardly over before a guide and carriage arrived to lend us their services for the day in a drive to Versailles."