I searched for the answer for this specific question of mine, but couldn't
find it. So I'm sorry If I duplicated some thread.

I was reading some stuff here about 自動詞 and 他動詞 and start wondering if all
verbs in japanese come in transitive/intransitive pairs like 付く/付ける.

Is this true?
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question
transitivity
Existence of Transitive/intransitive pairs
> I was reading some stuff here about 自動詞 and 他動詞 and start wondering if all
> verbs in japanese come in transitive/intransitive pairs like 付く/付ける.  
>  Is this true?

No.

Many Japanese verbs have intransitive and corresponding transitive verbs as
written in the article
[here](http://d.hatena.ne.jp/Pulin/20150214/1423890973), but there are
transitive verbs that do not have intransitive verbs as written in the last
part of the article [here](https://www.alc.co.jp/jpn/article/faq/03/41.html)
as follows.

> また、すべての動作動詞が自他の対応をもつわけではなく、自動詞をもたない動詞も少なからず見られます。
>
> 次郎が机を叩く。  
>  花子が荷物をもつ。
>
> このように、対応する自動詞をもたない動詞には、行為の対象の状態変化に無関心であるという、共通した特徴が観察されます。

According to the explanation, "Common features are observed in the transitive
verbs without corresponding intransitive verbs, which are indifferent to the
state change of the object of action."
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answer
Not all verbs come in transitive/intransitive pairs.

Quite a few intransitive verbs have no transitive counterpart. To name a
few...

> ある、[行]{い}く、[来]{く}る、[歩]{ある}く、[走]{はし}る、[座]{すわ}る、かみつく、そびえる、[響]{ひび}く etc...

行かせる, 来させる, 歩かせる etc. are causative forms (使役形), consisting of conjugated form
「行か」 + auxiliary 「せる」, conjugated form 「[来]{こ}」 + auxiliary 「させる」, etc.

... and quite a few transitive verbs have no intransitive copunterpart. To
name a few...

>
> [読]{よ}む、[話]{はな}す、[置]{お}く、[食]{た}べる、[殺]{ころ}す、[調]{しら}べる、[投]{な}げる、[蹴]{け}る、[打]{う}つ、もらう
> etc...

And, there're a few cases where the transitive verb and intransitive verb
share the same form, such as in:

> [開]{ひら}く -- ドアが[開]{ひら}く(intransitive) / ドアを[開]{ひら}く(transitive)  
>  [閉]{と}じる -- まぶたが[閉]{と}じる(intransitive) / まぶたを[閉]{と}じる(transitive)
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answer
They don't always come in pairs or obey the patterns, you can learn/study
about transitive intransitive verbs with [Japanese Verbs Transitive
Intransitive - TaJi -
他自](https://play.google.com/store/apps/details?id=io.yamayama.taji&hl=en)

*I am the developer of the app.
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answer