調律（ちょうりつ、chouritsu）
- tuning

The Japanese word 調律 ちょうりつ primarily means "tuning" or "regulation," particularly in the context of musical instruments. It refers to the act of adjusting the pitch of the strings or other sound-producing elements of an instrument to create the correct musical intervals and ensure that it is in tune. More broadly, 調律 can also imply adjustment or alignment to achieve a specific standard or optimal state, not just limited to musical instruments.

⚫︎ ピアノの調律 Translation: Piano tuning ⚫︎ エンジンを調律する Translation: To tune an engine ⚫︎ 心の調律 Translation: Tuning of the heart (figurative, implying emotional or mental adjustment)

⚫︎ You would use 調律 when referring to the act of tuning a musical instrument, like a piano, guitar, or violin. ⚫︎ It can also be used in a more abstract sense to talk about adjusting something to its ideal or correct state, such as regulating machinery. ⚫︎ The verb form 調律する ("to tune" or "to regulate") is common.

⚫︎ 調律 is primarily written in kanji: 調律. ⚫︎ The hiragana reading is ちょうりつ. ⚫︎ The okurigana is standard, with no variations.

⚫︎ チューニング (tuning) – this is a loanword from English, often used for car engines or technical equipment. ⚫︎ 調整 ちょうせい (adjustment, regulation) – a more general term. ⚫︎ 音合わせ おとあわせ (tone matching) – sometimes used for tuning instruments.

There aren't direct antonyms, but words suggesting a lack of tuning or disrepair could be considered opposite in meaning: ⚫︎ 狂い くるい (distortion, out of tune) ⚫︎ 不調 ふちょう (malfunction, not in good condition)

ピアノの調律をお願いできますか？ ・Translation: Could you please tune the piano? ・Explanation: This sentence uses 調律 in its most common application, requesting the tuning of a musical instrument.

エンジンの調律がうまくいかない。 ・Translation: The engine tuning isn't going well. ・Explanation: This example shows the use of 調律 in the context of machinery, indicating a problem with the adjustment or regulation of an engine.

⚫︎ 調 ちょう means "to tune," "to investigate," "to examine." ⚫︎ 律 りつ means "rhythm," "law," or "regulation." ⚫︎ The combination suggests the act of tuning or regulating something according to established laws or standards.