I came across the word わけあり(訳有り) in this example sentence:

> 結構わけありな人もミアお母さんは気前よく迎え入れてくれます

I don't have any trouble with the meaning, but given that the word わけあり comes
from the phrase わけがある, why would you say わけありな人 instead of say,
わけある人/わけがある人/わけのある人? Is it crucial for the word わけあり to stay together as a
single unit to convey the same meaning?

I'm not really used to seeing the masu-stem of a verb used like an adjective.
Are there other commons words like this?
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2022-09-10T06:27:28.647
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2022-09-10T06:27:28.647
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question
grammar
Understanding わけありな (noun)