underground   (Sound)

The underground has 6 Senses.

• resistance, underground
• レジスタンス
• a secret group organized to overthrow a government or occupation force
• 政府、または、占領軍を崩壊させるために組織された秘密グループ

• tube, subway system, subway, metro, underground
• サブウェー, 地下鉄, 地下鉄道, メトロ
• an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
• 地下を走る電車（通常都市で）

• underground
• in or into hiding or secret operation; "the organization was driven underground"
• 潜伏または秘密の活動において、または、それに

• underground
• beneath the surface of the earth; "water flowing underground"
• 地球の表面の下で

• belowground, underground
• under the level of the ground; "belowground storage areas"; "underground caverns"
• 地面の表面の下で

• cloak-and-dagger, secret, hole-and-corner, surreptitious, hush-hush, clandestine, hugger-mugger, undercover, underground
• 内密, 密, 秘やか, 密か, 秘めやか, 密やか, 秘密, 忍びやか
• conducted with or marked by hidden aims or methods; "clandestine intelligence operations"; "cloak-and-dagger activities behind enemy lines"; "hole-and-corner intrigue"; "secret missions"; "a secret agent"; "secret sales of arms"; "surreptitious mobilization of troops"; "an undercover investigation"; "underground resistance"
• 隠された目的または方法で行われる、あるいは特徴とされる