infertile /in-fûrˈtīl or (US) -til/

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

• rock climbing
• rock cod
• rock cods
• rock cook
• rock cooks
• rock cork
• rock corks
• rock cress
• rock cresses
• rock crystal
• rock crystals
• rock dove
• rock doves
• rock drill
• rock drills
• rocked
• rock elm
• rock elms
• Rock English
• self-sufficiency
• self-sufficient
• self-sufficiently
• self-sufficing
• self-suggestion
• self-support