As far as I know all じる verbs are supposed to be 一段.

I found an interesting set of rules online:

> Does the verb end in る?  
>  No → 五段  
>  Yes → Does it have an e or i sound before the る?  
>  No → 五段  
>  Yes → Is the e or i sound part of the okurigana of the verb?  
>  Yes → 一段  
>  No → Could be both.

And someone posted the following counter examples to rule 3:

混じる (まじる)  
脂ぎる (あぶらぎる)  
捩じる (ねじる)  
抓める (つめる)

So I looked it up and found a few explanations for why these aren't valid
examples.

脂ぎる seems like it's just 脂 + きる (unsure which kanji).  
捩じる is 捩る or maybe some funky 二段/四段/s-irregular stuff. (Still wondering
though, because じる was made for 一段.)  
抓める is 抓る.

I found that 混じる can also be 混る, but that spelling is listed in no dictionary.

So am I just ass-pulling stuff, or is the rule wrong or is まじる really special?
CC BY-SA 4.0
2019-02-11T23:53:19.657
65443
2019-09-06T01:01:20.360
3488
question
conjugations classical-japanese godan-verbs ichidan-verbs
Why is まじる a 五段 verb?
I don't know about the rule but 混じる does conjugate like a ichidan verb.

> 混じます, 混じない, 混じて

If it walks like a duck ...

Weirdly, on jisho.org it says its a godan verb but with inflections like an
ichidan verb
CC BY-SA 4.0
2019-09-05T17:32:36.803
70572
2019-09-05T17:42:18.737
2019-09-05T17:42:18.737
22352
34942
65443
answer
Many `on-reading + じる` verbs are indeed ichidan verbs, e.g., 信じる, 感じる, 念じる,
演じる. This じる is etymologically just する. Note that these verbs have zuru-ending
variations like 信ずる. See: [Origin of 信じる, 感じる,
etc?](https://japanese.stackexchange.com/q/11451/5010)

However, まじる has nothing to do with this rule. まじる is a plain godan verb whose
stem happens to include じ. Likewise, かじる, もじる and ねじる are godan verbs.

There is a rare verb こんじる, which is also written as 混じる in kanji. Since こん is
an on-reading, this conjugates as an ichidan verb, and has a variation,
混ずる（こんずる）. This is used only in highly stiff documents.

混る【まじる】 is a rare spelling variant of 混じる【まじる】, and it's perhaps considered
nonstandard by today's standards. Omission of okurigana has nothing to do with
the type of the verb. See: [What's the difference between 落す and
落とす?](https://japanese.stackexchange.com/q/36568/5010)
CC BY-SA 4.0
2019-09-06T00:49:11.507
70579
2019-09-06T01:01:20.360
2019-09-06T01:01:20.360
5010
5010
65443
answer