1. Not growing old; not appearing to age
   - ageless, unaging

Encyclopedia: Unageing

• brow
• brow ptosis
• browallia
• browbeat
• brown
• brown ale
• brown algae
• brown ash
• brown bat
• brown bear
• brown bells
• brown bent
• brown Betty
• brown bread
• brown bullhead
• brown butter
• brown coal
• brown creeper
• brown cup
• brown dwarf
• brown goods
• brown hickory
• brown hyena
• brown lacewing
• brown lemming