Antonyms
Synonyms
Etymology

1. underground

adjective. ['ˈʌndɝˌgraʊnd'] under the level of the ground.

Synonyms

Etymology

  • underground (English)
  • ground (English)
  • grund (Old English (ca. 450-1100))
  • under (English)
  • under (Old English (ca. 450-1100))

2. underground

noun. ['ˈʌndɝˌgraʊnd'] an electric railway operating below the surface of the ground (usually in a city).

Etymology

  • underground (English)
  • ground (English)
  • grund (Old English (ca. 450-1100))
  • under (English)
  • under (Old English (ca. 450-1100))

3. underground

adjective. ['ˈʌndɝˌgraʊnd'] conducted with or marked by hidden aims or methods.

Etymology

  • underground (English)
  • ground (English)
  • grund (Old English (ca. 450-1100))
  • under (English)
  • under (Old English (ca. 450-1100))

4. underground

noun. ['ˈʌndɝˌgraʊnd'] a secret group organized to overthrow a government or occupation force.

Etymology

  • underground (English)
  • ground (English)
  • grund (Old English (ca. 450-1100))
  • under (English)
  • under (Old English (ca. 450-1100))
Antonym.com