Synonym Nuance VS
How to say "Completion" in Japanese
Both words can translate to "completion", but which should you choose?
Japanese Option A
完成
かんせい (kansei)
N3 / CEFR Syllabus
VS
Japanese Option B
落成
らくせい (rakusei)
N2 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "completion" into Japanese, you must choose carefully between 完成 and 落成.
In Japanese, 完成 (かんせい (kansei)) is typically associated with "completion; perfection; accomplishment" (Syllabus Level: N3) and represents Refers to completion, perfection, or accomplishment of a product, project, or setup. Often used as 完成させる or 完成品. ⚠️ Haruka's Voice Column: 'Completion! "The cake for Haruka-san is complete!" ...っ, T-To make a cake just for me! B-But our relationship won't be "complete" until you marry me!' / 【ハルカ部長のワンポイント指導】『かんせい（完成）！『ハルカさんのための特製ケーキが完成しました！』って…っ, 私のためだけにケーキを完成させるなんて！でもね、私たちが結婚するまで、私たちの関係は『未完成』なんだからね！』.
On the other hand, 落成 (らくせい (rakusei)) maps to "completion (of a building, often with a ceremony)" (Syllabus Level: N2) and represents Similar to 竣工, but often implies not just the physical completion of construction, but also the readiness for use and sometimes includes an inauguration or completion ceremony.. A literal translation of "completion" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "完成"
三年以上の歳月をかけて建設されていた新しいサッカースタジアムが、ついに来月_______します。
The new soccer stadium, which had been under construction for over three years, will finally be completed next month.
Bilingual Context for "落成"
新しい図書館の落成式が盛大に行われた。
A grand completion ceremony was held for the new library.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "三年以上の歳月をかけて建設されていた新しいサッカースタジアムが、ついに来月_______します。" (Meaning: "The new soccer stadium, which had been under construction for over three years, will finally be completed next month.")
🎉 Correct Answer!
Remember: "完成" fits here because it means "completion; perfection; accomplishment" in the context of: "The new soccer stadium, which had been under construction for over three years, will finally be completed next month.". "落成" represents "completion (of a building, often with a ceremony)".