ものする

もの (mono, “thing”) + する (suru, “to do”)

• (Tokyo) ものする [mònósúꜜrù] (Nakadaka – [3])^[1]
• (Tokyo) ものする [mònóꜜsùrù] (Nakadaka – [2])^[1]
• IPA^(key): [mo̞no̞sɨɾɯ̟]

ものする • (monosuru) suru (stem ものし (monoshi), past ものした (monoshita))

1. (literary, euphemistic) Euphemistically expresses an action, especially the basic ones of the human body. Used frequently in the kana literature of the Heian period.
   1. (intransitive) to be; to exist; to be born; to die; to go; to come; etc.
      • c. 1001-1014, Murasaki Shikibu, Genji Monogatari:

        わざとあめるを、早(はや)うものせよかし。

        Wazato a meru o, hayō monoseyo kashi.

        It seems to be a special [invitation], so please go early.

   2. (intransitive, Edo period jargon) to have sex
   3. (intransitive) Used as a subsidiary verb, usually after …に (… ni): to be …
   4. (transitive) to say; to write; to eat; to give; etc.
   5. (transitive, Edo period jargon) to embezzle; to steal
   6. (transitive) to write; to compose; to finish (a poem, a piece of writing, etc.)

• 精選版 日本国語大辞典 entry at kotobank.jp