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Following [this
comment](https://japanese.stackexchange.com/questions/24351/what-are-the-
principles-behind-turning-foreign-language-words-into-
verbse-g-%E3%82%B0?noredirect=1&lq=1#comment53167_24352):

What is the difference in pronunciation or pitch accent between:

  * トラブル and トラブる
  * ダブル and ダブる

What are the regional differences (if any)?

Is the pronunciation rule generalisable to other pairs of the form ＊＊ル and
＊＊る?
CC BY-SA 4.0
2018-11-11T09:56:33.813
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2019-01-17T01:50:16.517
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question
pronunciation pitch-accent
Pronunciation Troubles with トラブル and トラブる: Loanwords with both noun and verb ending in ru mora
[トラブル]{LHLL} -- [トラブる]{LHHL}

[ダブル]{HLL} -- [ダブる]{LHL}

[バトル]{HLL} -- [バトる]{LHL}?

(I can't think of any other pairs...)

The verbs seem to have a pronunciation rule:

[サボる]{LHL}、 [テンパる]{LHHL}、 [ハモる]{LHL}、 [パニクる]{LHHL}、 [バグる]{LHL}、 [ググる]{LHL}、
[スタンバる]{LHHHL} ...

But I can't find a rule for loanwords ending with ル...

[トラブル]{LHLL}、 [サンダル]{LHHH}、 [ライフル]{HLLL}、 [バトル]{HLL}、 [メタル]{LHH} /
[メタル]{HLL}、[メダル]{LHH}...

As for the regional differences: In Kansai, for example, we pronounce these
verbs like: [サボる]{HHH}、[テンパる]{HHHH}、[ハモる]{HHH}、[パニクる]{HHHH}、[バグる]{HHH}...
CC BY-SA 4.0
2018-11-11T11:40:20.897
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2019-01-17T01:50:16.517
2019-01-17T01:50:16.517
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answer