Synonym Nuance VS
How to say "Understanding" in Japanese
Both words can translate to "understanding", but which should you choose?
Japanese Option A
理解
りかい (rikai)
N3 / CEFR Syllabus
VS
Japanese Option B
了解
りょうかい (ryōkai)
N3 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "understanding" into Japanese, you must choose carefully between 理解 and 了解.
In Japanese, 理解 (りかい (rikai)) is typically associated with "understanding; comprehension" (Syllabus Level: N3) and represents Refers to understanding, comprehension, or empathy for a logic, meaning, or feeling. Can be used with する as a verb.
On the other hand, 了解 (りょうかい (ryōkai)) maps to "understanding; agreement; 'Roger that!'; 'Understood.'" (Syllabus Level: N3) and represents Used to express understanding or agreement, often in a more casual or direct context than 承知しました. A literal translation of "understanding" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "理解"
この難しい数式の内容を、ようやく理解することができました。
I was finally able to understand the content of this difficult mathematical formula.
Bilingual Context for "了解"
「明日の会議は10時からです。」「了解しました。」
"Tomorrow's meeting is from 10 o'clock." "Understood."
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "この難しい数式の内容を、ようやく ＿＿＿ することができました。" (Meaning: "I was finally able to understand the content of this difficult mathematical formula.")
🎉 Correct Answer!
Remember: "理解" fits here because it means "understanding; comprehension" in the context of: "I was finally able to understand the content of this difficult mathematical formula.". "了解" represents "understanding; agreement; 'Roger that!'; 'Understood.'".