- 1[uncountable] the quality of understanding or dealing with a subject at a very serious level synonym depth He lacked profundity and analytical precision.
- 2[uncountable] the quality of being very great, serious, or powerful the profundity of her misery This is an error of great profundity.
- 3[countable, usually plural] something that someone says that shows great understanding His profundities were lost on the young audience.
NAmE//prəˈfʌndət̮i//(pl. profundities) (formal)