underground

underground

名词复数：undergrounds

词形变化：

动词过去式: undergrounded | 动词过去分词: undergrounded | 动词现在分词: undergrounding | 动词第三人称单数: undergrounds |

同义词：

covert | concealed | belowground | secret | undercover | surreptitious | clandestine | hush-hush | subway | resistance | tube | metro | subterranean | subterrestrial | hypogeous | sunken | subversive | nether | buried | secretive | below the surface | dissident | underfoot | alternative | hidden | underhand | underhanded | backdoor | under-the-table | under-the-counter | under wraps | private | opposition | subversiveness | incendiaries | terrorists | underground railway | subterraneously | subterraneanly | by tube | secretly | in secret | privately | in private | out of view | covertly | clandestinely | surreptitiously | furtively | stealthily | on the sly | sneakily | sneakingly | underhandedly | illegally | unlawfully | underworld | cloak-and-dagger | hell | nether regions | tunnel | underpass | gallery | hole-and-corner | corridor | subterrane | mine | hugger-mugger | cave | burrow | subway system | hole | pit | grave | tomb | sepulchre | crypt | vault |

反义词：

overground |

词义辨析：

同义:

a.地下的, 隐藏的, 埋藏的

subterranean  subterrestrial  hypogeous  belowground  sunken  nether  buried  below the surface  underfoot  

a.秘密的, 隐蔽的, 偷偷的

secret  undercover  hidden  covert  clandestine  surreptitious  underhand  underhanded  backdoor  under-the-table  under-the-counter  under wraps  concealed  private  hush-hush  

n.地狱, 冥府

underworld  hell  nether regions  

n.地道, 矿井, 洞穴, 坟墓

tunnel  underpass  subterranean passage  gallery  corridor  subterrane  mine  cave  burrow  hole  pit  grave  tomb  sepulchre  crypt  vault  

n.反对派, 起义者, 革命者

resistance  opposition  subversiveness  insurrectionaries  insurgents  seditionaries  incendiaries  saboteurs  terrorists  

n.地下铁道

subway  underground railway  metro  tube  

反义:

a.地下的, 地面下的

overground