underground
US /ˈʌndɚˌɡraʊnd/
adjective, noun Advanced · C1 Du lịch & lưu trú
Definition
below the surface of the ground; an underground railway network
Appears in city transit directions ('underground station') and parking structures.
Examples
The underground parking garage is open to all visitors until midnight.
Synonyms
- subterraneanexisting, occurring, or done under the earth's surface
- subwayan underground electric railroad, especially in a city
- metroan underground railway system in a city
Collocations
- Easy take the underground traintraveling via a subterranean metropolitan electric subway network
- Medium underground parking garage for employeesa basement vehicular parking structure beneath an office building
- Hard dismantle underground financial networks involved in launderingshutting down illicit shadow banking operations engaged in fraud
- Very Hard operate an underground resistance movement beneath surveillancerunning a clandestine organization secretly out of sight of authorities
Learner's English edition · Curated definitions for TOEIC learners.