Extremeness of degree.

Polish: doszczętność

Wisdom that is recondite and abstruse and profound.

synonyms: abstruseness, abstrusity, profundity, reconditeness.

Dutch: diepgang

The intellectual ability to penetrate deeply into ideas.

synonyms: astuteness, deepness, depth, profundity.

Polish: dogłębność, głębokość

The quality of being physically deep.

synonyms: deepness, profundity.

Intellectual depth; penetrating knowledge; keen insight; etc:
— The profoundness of the silence.

synonym: profundity.

Dutch: diepgang
Polish: głębokość, głębia