(きいん)

きいん
noun, verb (suru)
cause; origin
1. cause; origin; root cause
The underlying cause or origin of an event, problem, or phenomenon. As a suru-verb, it means 'to be caused by' or 'to originate from.'
事故(じこ)起因(きいん)調(しら)べる。
To investigate the cause of the accident.
この病気(びょうき)はストレスに起因(きいん)する。
This illness is caused by stress.
(おお)くの交通(こうつう)事故(じこ)は、不注意(ふちゅうい)疲労(ひろう)起因(きいん)していることが調査(ちょうさ)(あき)らかになった。
Investigations revealed that many traffic accidents are caused by carelessness or fatigue.

起因(きいん) means the root cause or origin of something. As a suru-verb, it takes the particle に to indicate the cause: Xに起因(きいん)する (to be caused by X).

PARTICLE PATTERNS:

  • Xに起因(きいん)する (to be caused by X, to originate from X)

COMMON COLLOCATIONS:

  • 起因(きいん)する (to be caused by)
  • 起因(きいん)(さぐ)る (to search for the cause)
  • Xに起因(きいん)する問題(もんだい) (a problem caused by X)

SIMILAR WORDS:

  • 起因(きいん) vs 原因(げんいん): 原因(げんいん) is the general everyday word for "cause," while 起因(きいん) is more formal and often used in technical, legal, or analytical writing. 起因(きいん) emphasizes the origin point, while 原因(げんいん) focuses on the causal factor itself.