stipulation

stipul 【（法律上の）約束、取引】

From Latin stipulari “to exact a promise, engage in a bargain,” a word of uncertain origin (once linked to Latin stipula “stalk” but that derivation is now rejected). :contentReference[oaicite:1]{index=1}

• stipulate - （条件として）規定する、約束する

  From Latin stipulatus (past participle of stipulari “to exact a promise”) + English verbal suffix -ate. :contentReference[oaicite:3]{index=3}

• stipulator - 約束を取り決める人

  stem stipul + agent noun suffix -ator → “one who stipulates.” :contentReference[oaicite:4]{index=4}

• stipulatory - 規定的な、約定の

  stem stipul + adjectival suffix -atory → “relating to stipulation.” :contentReference[oaicite:5]{index=5}

-ation 【行為・状態を示す名詞接尾辞】

From Latin -atio, a noun-forming suffix indicating the action or process of the verb it attaches to. :contentReference[oaicite:2]{index=2}