Comparing “ǒurán” and “ǒuěr”
偶然 vs 偶尔
Comparison section · original #31 · level order #124
How it works
Both words relate to something happening not regularly, but they belong to different grammatical categories and express slightly different ideas.
偶尔 (ǒuěr) is an adverb meaning occasionally or once in a while. It is used to describe how often something happens.
偶然 (ǒurán) is usually an adjective or noun meaning accidental, chance, or coincidental. It focuses more on the nature of the event itself rather than its frequency.
So the basic difference is:
偶尔 (ǒuěr) = occasionally, frequency
偶然 (ǒurán) = accidental / by chance / coincidence
Example sentences
工作再忙，我也会偶尔抽时间跟老朋友见个面。
No matter how busy work is, I still occasionally make time to meet old friends.
他平时很少发脾气，只是偶尔在压力太大的时候会显得有些不耐烦。
He rarely loses his temper. It is only occasionally, when the pressure is too great, that he seems a bit impatient.
我们的相遇看起来很偶然，其实背后也有很多必然的因素。
Our meeting seemed very accidental, but in fact there were also many inevitable factors behind it.
这次成功并不是偶然的，而是长期努力的结果。
This success was not accidental, but the result of long-term effort.
Key point
偶尔 (ǒuěr) usually answers “how often?” 偶然 (ǒurán) usually answers “was it by chance or not?”