infertile /in-fûrˈtīl or (US) -til/

1. Not fertile
2. Not capable of producing offspring, sterile
3. Not productive
4. Barren

• spear-shaft
• spear-shafts
• spear side
• spear sides
• spear tackle
• spear tackles
• spear thistle
• spear thistles
• spear-thrower
• spear-throwers
• spearwort
• spearworts
• speary
• speat
• spec
• spec-built
• speccies
• speccy
• special
• Special Air Service
• special area
• Special Boat Service
• Special Branch
• special constable
• special correspondent