Related Clues:
- Like operating rooms
- Hospital-clean
- Uncontaminated
- Like the OR
- Without germs
- Not producing offspring
- Free from living micro-organisms
- Obstinate, tenacious
- Obdurate and unyielding (8)
- Free from living micro-organisms, absolutely clean
- Unwilling to yield or grant a point
- Obstinate, bullheaded
- Tenaciously unwilling to give in
- Obstinate, unwilling to yield
- Absolutely clean, free of micro-organisms