noun Download 🔗Share An underground railway, especially for mass transit of people in urban areas. Examples : "My brother uses the underground to get to work every day. " vehicle area building Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A train that runs on such an underground railway. Examples : "My brother took the underground to work this morning. " vehicle traffic Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A rapid transit system, regardless of the elevation of its right of way. Examples : "The new underground connects the city center to the university campus. " vehicle system Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An underground walkway, tunnel for pedestrians (called pedestrian underpass in US). Examples : "To get to school quickly, the students used the underground walkway. " architecture building place Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An underground route for pipes, sewers, etc. Examples : "The construction crew worked on the underground, laying new sewer pipes. " utility building Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg. mines). Examples : "The spelunkers explored the fascinating underground caves. " geology archaeology area environment Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (with definite article) A movement or organisation of people who resist political convention. Examples : "the French underground during World War II" politics organization group Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (with definite article) A movement or organisation of people who resist artistic convention. Examples : "The underground was active in promoting alternative music at the school. " art culture organization Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To route electricity distribution cables underground Examples : "The city is undergrounding the power cables to reduce the risk of outages. " utility electric technology building Chat with AIVocabulary GamePractice Reading
adjective Download 🔗Share Below the ground; below the surface of the Earth. Examples : "There is an underground tunnel that takes you across the river." geology nature environment area Chat with AIVocabulary GamePractice Reading
adjective Download 🔗Share Hidden, furtive, secretive. Examples : "These criminals operate through an underground network." culture politics society Chat with AIVocabulary GamePractice Reading
adjective Download 🔗Share Outside the mainstream, especially unofficial and hidden from the authorities. Examples : "underground music" culture society politics Chat with AIVocabulary GamePractice Reading
adverb Download 🔗Share Below the ground. Examples : "The tunnel goes underground at this point." geology environment place Chat with AIVocabulary GamePractice Reading
adverb Download 🔗Share Secretly. Examples : "The student planned the surprise party underground, keeping it a secret from everyone. " politics government Chat with AIVocabulary GamePractice Reading