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Quadruple VS

Synonym Boundary: "強い", "丈夫な", "強固", "強靭"

All represent the core concept "strong", but require precise selection.

Japanese Option A

強い

つよい (tsuyoi)
N4 / CEFR
Japanese Option B

丈夫な

じょうぶな (joubuna)
N4 / CEFR
Japanese Option C

強固

きょうこ (kyouko)
N2 / CEFR
Japanese Option D

強靭

きょうじん (kyōjin)
N1 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "strong" in Japanese, you must carefully distinguish between "強い", "丈夫な", "強固", "強靭" based on context.
  • 強い (つよい (tsuyoi) - Level: N4): Maps to "strong, powerful, intense" and is used when い-形容詞.
  • 丈夫な (じょうぶな (joubuna) - Level: N4): Maps to "strong, durable, healthy" and is used when A な-adjective meaning strong, robust, or durable for objects.
  • 強固 (きょうこ (kyouko) - Level: N2): Maps to "strong, firm, solid, robust" and is used when Used to describe physical structures, systems, or relationships that are durable, resistant, and difficult to break. Emphasizes stability and robustness..
  • 強靭 (きょうじん (kyōjin) - Level: N1): Maps to "strong, robust, resilient, tough" and is used when Describes something physically or mentally strong, durable, and resilient to external forces or difficulties. 物理的、精神的に強く、困難や外部からの力に耐えうるしなやかで丈夫なさまを表します。.
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "強い"
今日は風がとても強いです。
The wind is very strong today.
Context for "丈夫な"
このかばんは丈夫なので、長く使えます。
This bag is durable, so I can use it for a long time.
Context for "強固"
その建物は地震にも耐えられる強固な構造をしている。
That building has a strong structure that can withstand earthquakes.
Context for "強靭"
彼の精神は、いかなる困難にも屈しない強靭さを持っている。
His spirit possesses a resilience that will not yield to any difficulty.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "今日は風がとても ___ です。" (Meaning: "The wind is very strong today.")
🎉 Correct Answer!

Remember: "強い" is correct here because it represents "strong, powerful, intense" in the context: "The wind is very strong today.".

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