Related Clues:

• Nonproductive
• Barren
• Far from arable
• Ultraclean, as a lab
• Antiseptic
• Clinically clean
• Like a scalpel
• Infertile
• Like surgical tools
• Fresh from the autoclave
• Like a mule, usually
• Aseptic
• Like desert terrain
• Unbearable?
• Devoid of vegetation