Antonym: overground. Similar words: undergrowth, undergraduate, ungrounded, ground, undergo, grounds, round and round, background. Meaning: n. 1. a secret group organized to overthrow a government or occupation force 2. an electric railway operating below the surface of the ground (usually in a city). adj. 1. under the level of the ground 2. conducted with or marked by hidden aims or methods. adv. 1. in or into hiding or secret operation 2. beneath the surface of the earth.
Random good picture Not show
31. The area contains vast underground cave systems.
32. I always seem to get lost in the underground.
33. The children were detained as hostage in the underground.
34. Rescuers found victims trapped several feet underground.
35. Water trickles through an underground grotto.
36. They found themselves in a vast underground chamber.
37. The railway track goes underground for a short distance.
38. The news has been passed on underground.
39. The train was trapped underground by a fire.
40. The missile is delivered from underground.
41. London has a well - developed underground system.
42. I always travel by underground.
43. They dived into the Underground to escape the rain.
44. This animal spends most of its life underground.
45. We parked in an underground garage near the hotel.
46. His father is a member of the underground.
47. I obtained it for one pound in the underground.
48. He went underground to avoid arrest.
49. He went underground to avoid the police.
50. Uranium is mined from deep underground.
51. The new underground railway will facilitate the journey to all parts of the city.
52. With technical details of the security system already circulating on the Internet[sentencedict.com/underground.html], instructions for cracking it will almost certainly make their way into the computer underground.
53. Alice carried a map of the London Underground in her head.
54. They caved in the roof of the underground passage with powerful explosives.
55. A London Underground spokesman defended the decision to hold the train until police arrived.
56. The plane hit so hard that one engine was buried 16 feet underground.
57. He was a member of the underground, harassing the invading army.
58. During the blitz we spent the night in underground shelters.
59. He sat by the window ruminating on recent underground accidents.
60. Living underground and having little use for eyes, moles are virtually blind.
More similar words: undergrowth, undergraduate, ungrounded, ground, undergo, grounds, round and round, background, playground, founder, common ground, groundwater, groundswell, flounder, undergarment, middle ground, on the grounds of, surrounded, round, under, around, round up, all round, round off, wounded, founded, bounded, under way, thunder, plunder.