完璧

• Reading: かんぺき
• Romaji: kanpeki
• Kanji breakdown: 完 (complete/perfect) + 璧 (jade disc) → flawless perfection (from the story of a perfect jade returned intact)
• Pronunciation: /kaɴ.pe.ki/

Meaning

Perfect, flawless — the ultimate declaration that something has zero room for improvement.

While 完璧 is a standard word meaning 'perfect,' it functions powerfully in casual speech as emphatic approval — declaring that a plan, performance, meal, or outcome is absolutely flawless. The kanji 璧 (jade disc) references an ancient Chinese story about a flawless jade, lending the word a sense of pristine completeness. In casual use, it is the strongest possible endorsement of quality.

Examples

1. このプレゼン完璧じゃん、何も直すとこないよ。 This presentation is perfect — there's nothing to fix.
2. 彼女の英語の発音完璧だよね、帰国子女なの？ Her English pronunciation is flawless, right? Did she grow up abroad?
3. 段取りが完璧で助かった。ありがとう。 The arrangements were perfect, that really helped. Thank you.

Usage Guide

Context: daily life, workplace, compliments, evaluations

Tone: definitive, assured, approving

Do Say

• 準備完璧だね、さすが！ (Your preparation is perfect — as expected of you!)
• 完璧な計画だと思う (I think it's a flawless plan)

Don't Say

• 完璧を求めすぎると嫌がられる (Demanding 完璧 too much can irritate people — use it as praise, not a standard)

Common Mistakes

• Misspelling as 完壁 (wall) instead of 完璧 (jade) — very common kanji mistake even among native speakers
• Using 完璧 for things that are merely good — it specifically means flawless with no room for improvement

Origin & History

From Chinese classical literature: 完 (complete) + 璧 (jade disc). References the story of 完璧帰趙 (returning the jade disc to Zhao intact). Has been used in Japanese for centuries.

Cultural Context

Era: Classical origin from Chinese literature, continuously used

Generation: All ages

Social background: Universal

Regional notes: Used across all of Japan. The kanji 璧 is one of the most commonly misspelled characters (written as 壁 wall instead of 璧 jade). Despite being a standard word, it is powerful casual praise that signals absolute approval.