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Quadruple VS

Synonym Boundary: "真剣", "深刻な", "真剣な", "深刻"

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

Japanese Option A

真剣

しんけん (shinken)
N3 / CEFR
Japanese Option B

深刻な

しんこくな (shinkokuna)
N3 / CEFR
Japanese Option C

真剣な

しんけんな (shinken na)
N3 / CEFR
Japanese Option D

深刻

しんこく (shinkoku)
N2 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "serious" in Japanese, you must carefully distinguish between "真剣", "深刻な", "真剣な", "深刻" based on context.
  • 真剣 (しんけん (shinken) - Level: N3): Maps to "serious; earnest; playing for keeps; real sword style" and is used when Refers to acting serious, earnest, or playing for keeps with absolute concentration.
  • 深刻な (しんこくな (shinkokuna) - Level: N3): Maps to "serious, severe, grave" and is used when Describes a problem, situation, or condition that is grave, severe, or has serious implications, requiring serious attention..
  • 真剣な (しんけんな (shinken na) - Level: N3): Maps to "serious, earnest" and is used when Describes someone's attitude, effort, or a situation that requires seriousness. Often used with 「に」 as an adverb.
  • 深刻 (しんこく (shinkoku) - Level: N2): Maps to "serious, severe, grave, acute" and is used when Describes a situation, problem, or condition that is grave, critical, or of great concern. Often used as a な-adjective.
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "真剣"
将来の進路について両親と_______に話し合った結果、彼は海外の大学へ留学することを決意しました。
As a result of discussing his future career seriously with his parents, he resolved to study abroad at a foreign university.
Context for "深刻な"
地球温暖化は深刻な問題だ。
Global warming is a serious problem.
Context for "真剣な"
彼はいつも仕事に真剣に取り組んでいる。
He always tackles his work seriously.
Context for "深刻"
地球温暖化は人類にとって深刻な問題だ。
Global warming is a serious problem for humanity.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "将来の進路について両親と_______に話し合った結果、彼は海外の大学へ留学することを決意しました。" (Meaning: "As a result of discussing his future career seriously with his parents, he resolved to study abroad at a foreign university.")
🎉 Correct Answer!

Remember: "真剣" is correct here because it represents "serious; earnest; playing for keeps; real sword style" in the context: "As a result of discussing his future career seriously with his parents, he resolved to study abroad at a foreign university.".

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