| Answer | Crossword Clue |
|---|---|
| ATEST | Underground explosion, for one. |
| CICADA | One might live underground for 17 years |
| NICO | One-named singer for the Velvet Underground |
| NICO | One-named singer for the 1960s Velvet Underground |
| ATEST | Underground explosion |
| decouples | Muffle the sound or shock of (a nuclear explosion) by causing it to take place in an underground cavity |
| decoupling | Muffle the sound or shock of (a nuclear explosion) by causing it to take place in an underground cavity |
