不ふ確かく定てい要よう素そ

noun

uncertain factors; variables; imponderables

Refers to elements or factors that are not fixed or predictable, often used in planning, analysis, or decision-making contexts.

• 計けい画かくにはまだ不ふ確かく定てい要よう素そが多おおい。

  There are still many uncertain factors in the plan.

• 不ふ確かく定てい要よう素そを減へらすために、事じ前ぜん調ちょう査さを徹てっ底ていした。

  We conducted thorough preliminary research to reduce the variables.