What is せんな a contraction of?


In a Manga a character says:

> 神域{しんいき}とはまたゾッとせんな

I guess it is a contraction of しない because of the phrase ゾッとしない - pretty
disgusting. But (1) I am not completely sure and (2) how does the contraction
"work" here in detail?




  * せん is roughly the same as しない. Strictly speaking, せん is not a direct contraction of しない but a contraction of **せぬ** , which is an equivalent of しない in classical Japanese . せん sounds colloquial but old-fashioned or dialectal at the same time. See: [When does ない become ぬ?](https://japanese.stackexchange.com/q/18727/5010)
  * な is a sentence-end particle. It's a contraction of nothing.

ぞっとしない is a set phrase that originally means "not so thrilling" or
"unexciting", but it's becoming an obsolete phrase. Few people in the younger
generation understand the original meaning of this word correctly. See [this
page](https://www.bunka.go.jp/pr/publish/bunkachou_geppou/2013_02/series_10/series_10.html).
Technically speaking, "disgusting" is incorrect, but the majority of real
examples of ぞっとしない I found from BCCWJ and 小説家になろう actually seem to mean
"disgusting" rather than "uninteresting". I suppose future dictionaries will
include this new sense.

By the way, if we accept the new sense, ぞっとする and ぞっとしない would effectively
mean the same thing. We may include this pair in [this
list](https://japanese.stackexchange.com/a/48105/5010).




  * せん is roughly the same as しない. Strictly speaking, せん is not a direct contraction of しない but a contraction of **せぬ** , which is an equivalent of しない in classical Japanese . せん sounds colloquial but old-fashioned or dialectal at the same time. See: [When does ない become ぬ?](https://japanese.stackexchange.com/q/18727/5010)
  * な is a sentence-end particle. It's a contraction of nothing.

ぞっとしない is a set phrase that originally means "not so thrilling" or
"unexciting", but it's becoming an obsolete phrase. Few people in the younger
generation understand the original meaning of this word correctly. See [this
page](https://www.bunka.go.jp/pr/publish/bunkachou_geppou/2013_02/series_10/series_10.html).
Technically speaking, "disgusting" is incorrect, but the majority of real
examples of ぞっとしない I found from BCCWJ and 小説家になろう actually seem to mean
"disgusting" rather than "uninteresting". I suppose future dictionaries will
include this new sense.

By the way, if we accept the new sense, ぞっとする and ぞっとしない would effectively
mean the same thing. We may include this pair in [this
list](https://japanese.stackexchange.com/a/48105/5010).

