C2 （因过于极端或奇特而）让人无法相信／描述／解释
to be extreme or very strange and therefore impossible to believe, describe, or explain
The chaos at the airport defies description. 机场一片混乱，难以用语言形容。
His speed when he's running defies belief.
This is a level of wickedness that defies explanation.
The originality of her ideas almost defies description.
Despite all that we know about the octopus, many aspects of its behaviour still defy explanation.
See also: defy