/ prəˈfʌndəti; NAmE / noun ( pl. -ies ) ( formal )
1.
[ U ] the quality of understanding or dealing with a subject at a very serious level
SYN depth :
He lacked profundity and analytical precision.
2.
[ U ] the quality of being very great, serious or powerful :
the profundity of her misery
3.
[ C , usually pl. ] something that sb says that shows great understanding :
His profundities were lost on the young audience.