43479
How wide is the usage of causative
([使役](http://dictionary.goo.ne.jp/jn/93755/meaning/m0u/%E4%BD%BF%E5%BD%B9/))
**す/さす** comparatively to **せる/させる**?
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2017-02-13T04:29:54.810
43474
2021-06-03T09:27:24.170
3371
question
conjugations causation
Causative せる/させる vs. す/さす
Historically, 「す/さす」 is older than 「せる/させる」.

Just like many other pairs of older and newer words/phrases with the same
meanings, the older forms are used more often and actively in Western Japan
than in Eastern Japan. (That is if you know anything about Japanese history.)

To say " **What are you making me say?** ", for instance,

Tokyoites would tend to say:

> 「何{なに}を言{い}わ **せる** んだよ！」

while Osakans would be likely to say:

> 「何を言わ **す** ねん！」

In schools, however, regardless of what part of the country we are from, we
all basically learn to use 「せる/させる」 in "Standard" Japanese. You would rarely,
if not ever, see or hear 「す/さす」 used in the media these days.

Thus, both forms may be used equally often " _ **at homes**_ " across the
country, but in school, business, media, etc., 「せる/させる」 would be the dominant
form.
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2017-02-13T11:14:30.457
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2021-06-03T09:27:24.170
2021-06-03T09:27:24.170
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43474
answer