1. Too old to be useful
   - overage, overaged, superannuated

See also: old

• batholith
• batholithic
• batholitic
• bathometer
• bathos
• bathrobe
• bathroom
• bathroom cleaner
• bathroom fixture
• bathroom tissue
• Bathsheba
• bathtub
• bathtub gin
• bathy-
• bathyal
• bathyal district
• bathyal zone
• Bathyergidae
• Bathyergus
• bathymeter
• bathymetric
• bathymetrical
• bathymetry
• bathyscape
• bathyscaph