synonym Comparative
所以
VS
原因
Differences Between "所以" and "原因"
Option A
所以
Meaning
reason; cause; origin; source; the reason why...
Reading
ゆえん (yuen)
Syllabus Level
N1
Practical Example
彼が成功した所以は、たゆまぬ努力にあった。
The reason he succeeded was his tireless effort.
Option B
原因
Meaning
cause, origin
Reading
げんいん (gennin)
Syllabus Level
A2
Practical Example
私は原因に興味があります。
I am interested in cause, origin.
Which one to use?
Select the correct Japanese word for this context
Which word fits this context: "(reason; cause; origin; source; the reason why...)"?
🎉 正解 / Correct!
使い分け解説:
- 所以: A formal and somewhat literary term. Often used in the pattern 「〜の所以」 or 「〜する所以」 to explain the fundamental reason, origin, or essence of something, implying 'the very reason why something is as it is'.
- 原因: Essential structural term in CEFR A2 vocabulary syllabus. (CEFR A2語彙シラバスにおける重要表現です。)
- 所以: A formal and somewhat literary term. Often used in the pattern 「〜の所以」 or 「〜する所以」 to explain the fundamental reason, origin, or essence of something, implying 'the very reason why something is as it is'.
- 原因: Essential structural term in CEFR A2 vocabulary syllabus. (CEFR A2語彙シラバスにおける重要表現です。)
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