1. Subject to or caused by an earthquake or earth vibration
   - seismic

See also: seism, unstable

• fossilisation
• fossilise
• fossilised
• fossilist
• fossilization
• fossilize
• fossilized
• fossilology
• fossorial
• fossorial foot
• fossorial mammal
• foster
• foster care
• foster family
• foster father
• foster home
• foster mother
• foster parent
• foster-brother
• foster-child
• foster-daughter
• foster-nurse
• foster-sister
• foster-son
• fosterage