antiseptic germless harmless uncommunicable innocuous nontoxic safe gentle healthful healthy helpful kind nice weak wholesome purity cleanliness cleanup conservation decontamination purification remediation sterility purifying decontaminating cleaning cleansing disinfecting sterilising sterilizing aiding assisting clearing curing deodorizing fixing fumigating healing helping honoring honouring improving mending praising sanctifying sanitising sanitizing upgrading washing depurating autoclaving pasteurizing