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How to say "Constant" in Japanese

Both words can translate to "constant", but which should you choose?

Japanese Option A

恒常的

こうじょうてき (kōjōteki)
N2 / CEFR Syllabus
VS
Japanese Option B

恒常

こうじょう (kōjō)
N1 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "constant" into Japanese, you must choose carefully between 恒常的 and 恒常. In Japanese, 恒常的 (こうじょうてき (kōjōteki)) is typically associated with "constant, permanent, habitual (adjectival noun)" (Syllabus Level: N2) and represents Describes something that is regular, continuous, or always present; not temporary or sporadic. Often used in formal or business contexts, implying stability or an ongoing state. 一時的ではなく、常に一定の状態であることや、定期的に継続することを表します。ビジネスや学術的な文脈でよく用いられます。. On the other hand, 恒常 (こうじょう (kōjō)) maps to "constant, permanent, stable, habitual" (Syllabus Level: N1) and represents Refers to something that remains constant or unchanging over time, often used in scientific, medical, or administrative contexts. Often used as 恒常的. A literal translation of "constant" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "恒常的"
この問題は一時的なものではなく、恒常的な解決策が必要です。
This problem is not temporary; it requires a permanent solution.
Bilingual Context for "恒常"
人体の内部環境は恒常的に保たれている。
The internal environment of the human body is maintained constantly.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "この問題は一時的なものではなく、 ___ な解決策が必要です。" (Meaning: "This problem is not temporary; it requires a permanent solution.")
🎉 Correct Answer!

Remember: "恒常的" fits here because it means "constant, permanent, habitual (adjectival noun)" in the context of: "This problem is not temporary; it requires a permanent solution.". "恒常" represents "constant, permanent, stable, habitual".

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