経けい済ざい人じん

noun

Homo economicus; economic human

Economics term for the rational, self-interested decision-maker in theoretical models. Not a common everyday word.

• 経けい済ざい学がくでは、人にん間げんを合ごう理り的てきな経けい済ざい人じんとして仮か定ていすることが多おおい。

  In economics, humans are often assumed to be rational Homo economicus.

noun

financial expert; businessperson

Refers to a person well-versed in economic or financial matters, or simply a businessperson. Less common than 経済の専門家 or 実業家 in everyday speech.

• 彼かれは優すぐれた経けい済ざい人じんとして知しられている。

  He is known as an outstanding businessperson.