完成|かんせいkansei[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbcompletion; perfection; accomplishment
   新あたらしい鉄道てつどうはまだ完成かんせいしていない。↗

   The new railway is not completed yet.

• Synonym完了かんりょうNeutralSays a task or procedure has fully ended, as in 「送信完了」; unlike 「完成」 it does not imply a finished product.
• Synonym仕上げしあげNeutralNoun for the final touches or finishing stage of work, as in 「仕上げの段階」.
• Synonym仕上げるしあげるNeutralVerb for finishing work down to the final polish; stresses the wrapping-up stage rather than the product as a whole.
• Synonym大成たいせいWrittenWritten word for completing something great after years of effort, or becoming a leading figure in a field.
• Related成就じょうじゅWrittenWritten word for realizing a wish or difficult goal, as in 「恋愛成就」; often carries a nuance of praying for something to come true.
• Related完遂かんすいFormalFormal word for carrying a task through to the very end, as in 「任務を完遂する」; more formal than 「完成」.
• Related終えるおえるNeutralVerb for finishing or bringing something to an end; unlike 「完成」 it does not stress a polished, perfect result.
• Related終了しゅうりょうNeutralFor activities or periods ending, as in 「試合終了」; no finished product is implied.
• Related遂行すいこうWrittenWritten style: carrying out duties or tasks, as in 「職務遂行」; about execution rather than producing a finished product.
• Related貫徹かんてつWrittenWritten word for carrying a principle or intention through to the last, as in 「初志貫徹」; stresses persistence, not a finished product.
• RelatedフィニッシュNeutralLoanword for the end of a race, the finish line, or the landing in gymnastics.
• Related成功せいこうNeutralMeans achieving one's aim or getting results; 「完成」 is about producing a complete finished product.
• Relatedし終えるしおえるNeutralSays one particular action has been seen through to the end; mostly used in colloquial speech.
• Relatedなし終えるなしおえるWrittenWritten and rare: says a difficult undertaking has been completed.
• Relatedなし終わるなしおわるWrittenWritten and rare: things getting fully done; in everyday speech say 「終わる」.
• Related了するりょうするWrittenWritten and rare: to complete or finish; can also mean to understand.
• Antonym未完成みかんせいNeutralAntonym: not yet complete; the direct opposite of 「完成」.
• Antonym着手ちゃくしゅWrittenWritten word for setting to work; opposite of 「完成」 at the starting end.
• Antonym中断ちゅうだんNeutralAntonym: stopping partway through, whereas 「完成」 means carrying things to the end.

Use 「完成」 for producing a complete finished product. For procedures or processes ending, say 「完了」; for activities ending, 「終了」. For final touches use 「仕上げる」, and for carrying out tasks 「遂行」 or 「完遂」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 目標もくひょうや希望きぼうのとおりに、あるいは機能きのうを果はたせる水準すいじゅんまで、完全かんぜんに出来上できあがること。
2. 完全かんぜんに出来上できあがる。
3. 仕上しあげて完全かんぜんにする。仕上しあげて完かんい物ものにする。