under 2022.12.06 underとは 意味・定義・例文 Preposition 前置詞 1. directly below ~の下に, ~の下で under water under ground They lay down under the shade of a tree. 2. now being doing or done ~している最中で The dam is now under construction. 3. less, lower, or smaller than ~以下で, ~未満で children under five years old