Related Clues:

• Spick-and-span
• Barren
• Ultraclean, as a lab
• Antiseptic
• Clinically clean
• Like a scalpel
• Infertile
• Like surgical tools
• Fresh from the autoclave
• Immaculate
• Like a mule, usually
• Aseptic
• Unbearable?
• Like good operating rooms
• Not being productive