独どく擅せん場じょう

noun

one's exclusive domain; field where one is unrivaled

Refers to a situation or area where a particular person or group dominates without competition. Often used in contexts like sports, business, or personal expertise.

See also: 独壇場

• 彼かれは数すう学がくの分ぶん野やでは独どく擅せん場じょうだ。