1The rarefied atmosphere of the opera house was a far cry from the mundane world outside.
2At high altitudes, the air becomes rarefied, making it difficult for humans to breathe.
3The professor's rarefied sense of humour was lost on the undergraduate students, who found his jokes obscure.
4The art gallery's rarefied environment was designed to foster a sense of contemplation and appreciation among visitors.
5The rarefied culture of the aristocracy was marked by strict rules of etiquette and propriety.