Did 無くす come from 無くする?


I'm wondering about the origin of the word 無くす.

There is the word 無{な}い, meaning "to not exist/be there". You can add なる and
する to adjectives to create verbs:

  * なる - 無くなる - "to become not there/become lost"
  * する - 無くする - "to make not there/lose"

Now, according to some dictionaries, 無くなる seems to be considered a [word of
its own](http://jisho.org/search/%E7%84%A1%E3%81%8F%E3%81%AA%E3%82%8B), but
[not 無くする](http://jisho.org/search/%E7%84%A1%E3%81%8F%E3%81%99%E3%82%8B),
which I find interesting.

無くす means the same thing as 無くする, and the definition in
[デジタル大辞泉](https://dictionary.goo.ne.jp/jn/163704/meaning/m0u/%E3%81%AA%E3%81%8F%E3%81%99/)
of 無くす does use 無くする.

Thus, I am wondering if 無くす stems from 無くする, but with the る dropped, in the
same way as 愛す appeared.




す is the
[文語体【ぶんごたい】](https://en.m.wikipedia.org/wiki/Classical_Japanese_language) (old
form) of する. する was originally the 連体形【れんたいけい】 (adnominal form) of す. It was
combined with the 終止形【しゅうしけい】 (dictionary form) later.

Though 無【な】くす stems from **無【な】く + す** , it is not considered to be a word
created by adding す, but is instead thought of as a word like 荒【あ】らす, 殺【ころ】す,
etc. (Usually the す in words created by adding す is low pitch, such as 愛す,
read as あいす【HLL】, but the one in 無くす is read as なくす【LHH】 with a high pitch.)
For this reason, 無くする is uncommon. Most dictionaries in Japan don't give 無くする
as an entry.




す is the
[文語体【ぶんごたい】](https://en.m.wikipedia.org/wiki/Classical_Japanese_language) (old
form) of する. する was originally the 連体形【れんたいけい】 (adnominal form) of す. It was
combined with the 終止形【しゅうしけい】 (dictionary form) later.

Though 無【な】くす stems from **無【な】く + す** , it is not considered to be a word
created by adding す, but is instead thought of as a word like 荒【あ】らす, 殺【ころ】す,
etc. (Usually the す in words created by adding す is low pitch, such as 愛す,
read as あいす【HLL】, but the one in 無くす is read as なくす【LHH】 with a high pitch.)
For this reason, 無くする is uncommon. Most dictionaries in Japan don't give 無くする
as an entry.

