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synonym Comparative
深い
VS
親愛

Differences Between "深い" and "親愛"

Option A
深い
Meaning
deep, profound
Reading
ふかい (fukai)
Syllabus Level
N4
Practical Example
この海はとても深くて、底が見えない。
This sea is very deep; I can't see the bottom.
Option B
親愛
Meaning
deep affection; sincere love; dear; beloved
Reading
しんあい (shin'ai)
Syllabus Level
N3
Practical Example
_______なる友人の門出を祝して、私たちは心からのスピーチを贈りました。
To celebrate the new start of our dear friend, we offered a heartfelt speech.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(deep, profound)"?
🎉 正解 / Correct!
使い分け解説:
- 深い: い-adjective. Describes significant vertical extent downward (e.g., a hole, water) or inward (e.g., a forest). Also used for abstract concepts like profound thoughts, deep relationships, rich colors, or deep sleep.
- 親愛: Refers to deep affection, sincere love, or showing warm emotional bonds toward friends, family, or partners. Often used as 親愛なる (dear/beloved). ⚠️ Haruka's Voice Column: 'Deep affection! Sincere love! S-So what if I write 'To my dearest subordinate' on this document?! It is strictly professional...っ, B-But in my heart, it means 'dearest partner'!' / 【ハルカ部長のワンポイント指導】『親愛なる部下へ!そうよ、書類にそう書いたのはただのビジネスマナーよ!…でもね、私の心の中では、あんたは全宇宙で一番『親愛なる(愛する)伴侶』なんだからね!勘違いしていいわよ!』
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