要よう因いん

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Common wordJLPTN1Freq.FrequencyTop 5,000

Meanings

noun, noun which may take the genitive case particle 'no'

main cause; primary factor

Refers to the principal reason or contributing element behind a situation, often used in analytical, scientific, or news contexts.

〈事こと〉の要よう因いんとなるto become a factor in (something)
円えん安やすが輸ゆ出しゅつ増ぞう加かの要よう因いんとなった。
The weak yen became a factor in the increase in exports.
要よう因いんを分ぶん析せきするto analyze the (contributing) factors
専せん門もん家かが事じ故この要よう因いんを分ぶん析せきした。
Experts analyzed the factors behind the accident.
要よう因いんを探さぐるto search for/investigate the cause
業ぎょう績せき悪あっ化かの要よう因いんを探さぐる調ちょう査さが行おこなわれた。
An investigation was conducted to find out the factors behind the decline in performance.
大おおきな要よう因いんa major factor
少しょう子し化かは経けい済ざい停てい滞たいの大おおきな要よう因いんだ。
The declining birth rate is a major factor in the economic stagnation.

原げん因いんN4
原因 is the general word for 'cause' of any effect, while 要因 highlights the main or most significant factor among several contributing causes.
要よう素そN3
要素 is a neutral term for a component or element, whereas 要因 specifically refers to a factor that causes or influences an outcome.
因いん子し
因子 is a more technical/statistical term for a causal factor, often used in scientific or medical contexts, while 要因 is broader and common in news and analysis.
ファクター
要因 is the native Japanese word for a contributing cause and fits formal writing, while ファクター is a loanword with a more technical, modern feel.

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勝しょう因いん
勝因 refers specifically to a reason for a win, whereas 要因 is a broader term for any contributing factor, positive or negative.
因いん
要因 refers to a contributing factor among several, whereas 因 denotes the direct or primary cause itself.
一いち因いん
要因 refers to a key or major factor behind an outcome, whereas 一因 stresses that it is only one of multiple contributing causes.
主しゅ因いん
要因 refers to any contributing factor in an analysis, whereas 主因 designates the single dominant factor.
誘ゆう因いん
要因 is a neutral term for any contributing factor (positive or negative), while 誘因 specifically emphasizes a factor that provokes or triggers something, often negative like disease or crisis.
決きめ手て
要因 is a neutral term for a contributing factor or cause, while 決め手 specifically singles out the factor that clinches or decides the outcome.

結けっ果かN3
結果 is the outcome or result, while 要因 is the underlying cause or factor that produces it.

要よう点てんN2
要因 means a causal factor behind an event, whereas 要点 means the essential point in an explanation or argument—easy to confuse because both start with 要.
条じょう件けんN3
要因 is a causal factor that explains why something happened, while 条件 is a requirement or stipulation that must be met, not a cause.

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Compound of 要 (essential point) and 因 (cause). The exact historical derivation is uncertain, but the kanji combination naturally conveys 'key cause'.