Как по Английски будет तत्त्वज्ञान

noun

The study of the fundamental nature of knowledge, reality, and existence, especially when considered as an academic discipline.

Примеры использования:

Theology ‘is an academic discipline like philosophy, english literature or the classics,’ he said.

noun

An expert in or student of the branch of philosophy that deals with the first principles of things, including abstract concepts such as being and knowing.

Примеры использования:

A talented metaphysician famous for defending idealism

verb

Speculate or theorize about fundamental or serious issues, especially in a tedious or pompous way.

Примеры использования:

He paused for a while to philosophize on racial equality