| Rating | Solver | Clue |
|---|---|---|
| HELPFULNESS | Co-operation | |
| USE | Operation | |
| PARTNERSHIP | Co-operation | |
| INACTUATION | Operation. | |
| CALCULATION | Maths operation | |
| CLOSED | Ceased operation | |
| STING | Undercover operation | |
| MASTERMINDS | Directs (operation) | |
| LIPOSUCTION | Fat-reduction operation | |
| CASTRATION | Gelding operation | |
| MINUS | Arithmetic operation | |
| ADDITION | Maths operation | |
| TRANSPLANT | Medical operation | |
| ANAESTHETISE | Sedate for operation | |
| TACTIC | Mode of operation | |
| CODENAME | Military operation’s title | |
| ANAESTHETIC | Theatre operation sedative | |
| INSTITUTING | Putting into operation | |
| INSTIGATING | Putting into operation | |
| ACTIVE | In operation; busy | |
| AVIATION | Operation of aircraft | |
| GO | Act; working; operation. | |
| TREE SURGERY | Operation on diseased gums? | |
| PYRAMID | Con operation, ... scheme | |
| USAGE | Common mode of operation | |