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In the lyric of 余白 by 尾崎由香, there is the line

> 言わば引きこもりなくせに

In this line, the 連用形 of the verb 引きこもる seems to be used as a 形容動詞. While it
is quite common to use the 連用形 of a verb as a noun, this is the first time I
see 連用形 used as a 形容動詞 if I remember correctly. In this particular case, I did
some search and found many examples with "引きこもりのくせ", which is using the 連用形 as
a noun in the usual way, but I am not sure whether there are any cases where
the 連用形 can only be used as a 形容動詞.

So under what conditions can the 連用形 be used as 形容動詞 and can I tell it from
the verb itself?
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2021-06-27T10:30:47.247
87224
2021-12-30T02:52:54.700
27389
question
na-adjectives renyōkei
Use 連用形 as a 形容動詞 (na-adjective)
It seems a difficult set of conditions to satisfy. If a word derived from a
verb is used as an adjective, it most likely describes a person’s tendency to
behave in a certain way. But such an adjective tends to be used also as a noun
to refer to the kind of person it describes.

As examples, I can think of those that end with がり, such as 怖がり, 寒がり, and
面倒くさがり. These are used as both adjectives and nouns. Interestingly, 怖がりな人
produces more search results than 怖がりの人. whereas 寒がりな人 much fewer than 寒がりの人.

In comparison, 引きこもり is more clearly a noun. I find 引きこもりな人 a bit weird.
However, it doesn’t surprise me that some people use this kind of noun as an
adjective. The distinction often gets blurred.
CC BY-SA 4.0
2021-06-28T11:02:19.947
87237
2021-12-30T02:52:54.700
2021-12-30T02:52:54.700
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43676
87224
answer