sub·ter·res·tri·al 
(sŭb′tə-rĕstrē-əl)
(sŭb′tə-rĕstrē-əl)adj.
Subterranean; underground.
- grouchiness
- grouchy
- ground
- ground
- ground ball
- groundball
- ground bass
- ground beetle
- groundbreaker
- groundbreaking
- ground cedar
- ground cherry
- ground cloth
- ground-controlled approach
- ground cover
- groundcover
- ground crew
- ground-effect machine
- grounder
- ground fault
- ground-fault interrupter
- groundfish
- ground floor
- ground glass
- ground hemlock