| ECOFRIENDLY | Not harmful to the environment |
| ECO | Some decorations are not harmful to the environment (3) |
| GREENLAND | Arctic territory that's not harmful to the environment? (9) |
| GREEN | Not harmful to the environment (5) |
| ENVIRONMENTALLY | - friendly; description of a product considered "green" or not harmful to the natural world (15) |
| UNGREEN | Hungry teens discarding wrappers harmful to the environment |
| LINDANE | Synthetic insecticide now thought harmful to the environment (7) |
| ACIDRAIN | Precipitation that is harmful to the environment (4,4) |
| GREENER | Less harmful to the environment (7) |
| ECOTAX | A levy on products, practices and activities considered harmful to the environment (6) |
| INOFFENSIVE | Not harmful |
| THERAPEUTIC | Not harmful |
| EDIBLE | Not harmful to consume (6) |
| DNOTICE | Name given to a UK government request that the media not report matters harmful to the national interest (1-6) |
| UVRAY | Bit of light that's harmful to the skin |
| CFCS | They're harmful to the ozone (abbr.) |
| BENIGN | Being wrong, by the way, is not harmful (6) |
| THELEAST | The slightest of Banquo's wounds could be lethal to the environment (3,5,1,5,2,6) |
| TONATURE | The slightest of Banquo's wounds could be lethal to the environment (3,5,1,5,2,6) |
| ADEATH | The slightest of Banquo's wounds could be lethal to the environment (3,5,1,5,2,6) |
