1. Capable of being placed opposite to something
   "the thumb is opposable to the forefinger"
   - apposable

Antonym: unopposable

• subaquatic
• subaqueous
• subarachnoid space
• subarctic
• subartesian
• subatomic
• subatomic particle
• subaudition
• subbase
• subbing
• subclass
• subclass Acnidosporidia
• subclass Actinopoda
• subclass Alismatidae
• subclass Amphineura
• subclass Anapsida
• subclass Archaeornithes
• subclass Archosauria
• subclass Arecidae
• subclass Asteridae
• subclass Branchiopoda
• subclass Caryophyllidae
• subclass Cirripedia
• subclass Cnidosporidia
• subclass Commelinidae