| Rating | Solver | Clue |
|---|---|---|
| AIR | Oxygen | |
| RESPIRATION | Oxygen intake | |
| HAEMOGLOBIN | Oxygen carrier | |
| OZONE | Condensed oxygen | |
| OXIDE | Oxygen compound | |
| OXIDATION | Combination with oxygen | |
| OXIDISE | Combine with oxygen | |
| OXIDISED | Combined with oxygen | |
| AEROBIC | Depending on oxygen | |
| OXY- | A compound containing oxygen. | |
| INHALE | Fill the lungs with oxygen | |
| HYPERVENTILATE | Breathe in too much oxygen | |
| OXYGENIUM | The technical name of oxygen. | |
| HOARD | Heard engineer swapped to oxygen reserve | |
| TUBING | Surgical tube connecting to oxygen tank | |
| ANAEROBIC | Living in the absence of oxygen | |
| AIRSUPPLY | Oxygen tank's purpose in scuba diving | |
| OZONIZE | To convert into ozone, as oxygen. | |
| DISOXYGENATE | To deprive of oxygen; to deoxidize. | |
| SEMIOXYGENATED | Combined with oxygen only in part. | |
| EBOLA | Somehow able to assimilate oxygen for virus | |
| DEGAS | Deny oxygen, maybe, to a French painter | |
| KALIGENOUS | Forming alkalies with oxygen, as some metals. | |
| OXYSULPHIDE | A ternary compound of oxygen and sulphur. | |
| PSYCHE | Inner self crazy to exchange oxygen for energy | |