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| to flee; abscond: |
| chat, to converse |
| underground | |
| —adj | |
| 1. | occurring, situated, or used below ground level: an underground tunnel; an underground explosion |
| 2. | secret; hidden: underground activities |
| —adv | |
| 3. | going below ground level: the tunnel led underground |
| 4. | into hiding or secrecy: the group was driven underground |
| —n | |
| 5. | a space or region below ground level |
| 6. | a. a movement dedicated to overthrowing a government or occupation forces, as in the European countries occupied by the German army in World War II |
| b. (as modifier): an underground group | |
| 7. | the underground US and Canadian equivalent: subway an electric passenger railway operated in underground tunnels |
| 8. | ( |
| a. any avant-garde, experimental, or subversive movement in popular art, films, music, etc | |
| b. (as modifier): the underground press; underground music | |