Translation guide
The English word 'perfect' covers several distinct meanings. This guide helps learners choose the right Japanese expression for each use, from describing flawless objects to ideal timing.
Describing something that is completely correct, without errors, or of the highest quality.
The most common and direct equivalent for 'perfect' in the sense of flawless. Used for objects, performances, plans, etc.
彼の日本語は完璧だ。
His Japanese is perfect.
この計画は完璧です。
This plan is perfect.
Emphasizes completeness and lack of flaws. Often used for systems, sets, or abstract concepts.
完全な解決策はない。
There is no perfect solution.
Loanword from English. Often used in casual or trendy contexts, like games or scores.
テストでパーフェクトを取った。
I got a perfect score on the test.
Literally 'no complaints'. Used to express that something is perfectly satisfactory.
彼の仕事ぶりは申し分ない。
His work is perfect.
Describing something that is the best possible fit for a situation or need.
Means 'optimal' or 'most suitable'. Used when something is perfect for a specific purpose.
この靴はハイキングに最適だ。
These shoes are perfect for hiking.
An onomatopoeic adverb/adjective meaning 'exactly right' or 'fitting perfectly'. Very common in daily speech.
Means 'ideal'. Slightly more formal than ぴったり.
Emphasizing that something is entire or utter, often with a negative connotation.
Used as a pre-noun adjective meaning 'complete' or 'total'. Often with words like 失敗 (failure) or 無視 (ignoring).
それは完全な時間の無駄だ。
It's a perfect waste of time.
彼は完全な他人だ。
He's a perfect stranger.
Means 'utter' or 'complete'. Often used with nouns like 嘘 (lie) or 偶然 (coincidence).
それはまったくの嘘だ。
That's a perfect lie.
Referring to the grammatical perfect aspect.
The standard term for 'perfect tense' in linguistics.
現在完了形は英語の難しい文法の一つだ。
The present perfect tense is one of the difficult grammar points in English.
The verb meaning to improve something until it is flawless.
The most common way to say 'to perfect' something. Literally 'make perfect'.
彼はその技術を完璧にした。
He perfected the technique.
Means 'to complete' or 'to bring to perfection'. Often used for projects or works.
彼女は新しいシステムを完成させた。
She perfected the new system.
完璧 (kanpeki) is the most common translation for 'perfect' meaning flawless. 完全 (kanzen) emphasizes completeness and is often used in formal or technical contexts. ぴったり (pittari) is a casual, onomatopoeic word for a perfect fit or match.
彼の答えは完璧だった。
His answer was perfect (no mistakes).
完全な円を描いた。
He drew a perfect circle (complete, geometrically exact).
この服は私にぴったりだ。
These clothes fit me perfectly.
While パーフェクト is understood, it can sound overly casual or like 'Japlish'. In most situations, 完璧 or ぴったり are more natural choices.
完璧な人なんていない。
Nobody's perfect.
今日は天気が最高だ。
The weather is perfect today.
Using 完璧 for weather is possible but 最高 (saikou, 'the best') is more natural.
このドレスはあなたにぴったりだよ。
This dress is perfect on you.
この部屋は私たちにぴったりのサイズだ。
This room is the perfect size for us.
This is a perfect location.