| SUSTAINABLE | (Of energy sources) capable of being maintained at a steady level without exhausting natural resources or causing ecological damage (11) |
| ACROBATS | Killer whale upsets fly-by-nights and those working at top level without nets (8) |
| TIRELESSLY | Tries yells out without exhausting oneself (10) |
| SUSTAINABILITY | The property of being capable of being maintained, supported, etc (14) |
| TENABLE | Capable of being maintained, or defended (7) |
| VIABILITY | Visibility is less, but including a prospect of being maintained (9) |
| ISNT | Scarlett maintained, at the beginning of Gone With The Wind, "Besides, there ... going to be a war" |
| ADAGIO | A composition, such as Samuel Barber's notable example, played at a steady tempo of the same name (6) |
| JOGGER | One who runs at a steady pace as a form of physical exercise (6) |
| UNTENABLE | Incapable of being maintained or defended (9) |
| TROTS | Moves at a steady pace, as of a horse (5) |
| TROT | A left-winger, in short, can move at a steady pace (4) |
| SUSTAINED | Maintained at length without weakening (9) |
| ROADHOGS | Ways around takeover provides annoyance for those trying to drive things forward at a steady pace (4 |
| JOG | To trot at a steady pace as in exercise for health |
| MEASUREDTREAD | What the tyre inspector did at a steady pace? (8,5) |
| ELOPE | In the end, move off at a steady pace to get to the match (5) |
| FLYWHEEL | Rotating device which keeps engines running at a steady speed (8) |
| CARBS | Energy sources, of a sort |
| VIGIL | Watch maintained at night (5) |
