declare war onとは意味:~に宣戦布告する、~に戦爭(zhēng)を宣言する、~に撲滅を宣言する By their actions, they have declared war on [upon, against] the rest of society. It's a different world now, you don't declare war anymore. Mexican government's declared w...declare war on en francais:déclarer la guerre àdeclare war on artinya:menyatakan perang terhadapdeclare war on перевод:объявлять войну (кому-л., чему-л.)