Possible Clues:

• The French in the can, having been in the wash
• Sterilize
• Not obscene; smooth
• Unarmed, to a police officer
• Completely (colloq.), free of dirt
• Pure, hygienic
• A washer will make this thin after a century
• Remove dirt or stain
• Dos the century incline to have got awash?
• Word before cut or bill