I usually see this phrase in Shonen manga from an antagonist, referring to a
"persistent" character.

I remember a quote that goes like this:

> ほう 大したもんだ。

It was from a character called "Ohm" from One Piece, when found that Roronoa
Zoro was still alive.
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2021-05-23T18:02:31.267
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question
expressions manga
What does "大したもんだ" mean?
大した is used to express admiration for something one finds remarkable or
extraordinary. 大したもんだ or 大したものだ is kind of like saying “You are something” but
it sounds condescending. It may also be used sarcastically.
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2021-05-24T01:36:30.817
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This is a set phrase that literally means "That(it) is a big deal." But the
connotations and actual meanings depend on the context.

A breakdown of the phrase goes:

> [大した](https://jisho.org/word/%E5%A4%A7%E3%81%97%E3%81%9F)  
>  considerable; great; important; significant; a big deal

> もん＝もの  
>  thing

> だ  
>  copula

You can use this expression to praise the someone else by marveling at their
achievement.

Similar expressions

大したものですね/大したものだね/すごいですね/すごいね/さすがですね/さすがだね

There is another expression 大したことではない/大したことない meaning "not a big deal".
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answer