| MINIATURISING | I ruin giantism by making it the opposite (13) |
| PROFESSION | Is it the opposite of admitting to a crime career? |
| ILLTREAT | Abuse by making it taller (3-5) |
| TINKERED | Hardened steel by making it red-hot (8) |
| TACTICUS | During the 4th century BCE, he wrote On the Defense of Fortifications, one chapter of which was devoted to cryptography, making it the earliest treatise on the subject. |
| PRIORITISING | Previous institute got it back from Carol making it the most pressing matter (12) |
| BOWHEAD | The Greenland right whale with a lifespan of some 200 years or more, making it the longest-living mammal on Earth (7) |
| FILIBUSTERING | Obstruction of legislation by making lengthy speeches, prolonging proceedings etc (13) |
| ONESLEVELBEST | Try as hard as one can, by making every effort (4,5,4) |
| TIRAMISU | Dessert from America - I ruin it on the counter |
| STEALAMARCHON | Gain an advantage by making off with a bit of spring? (5,1,5,2) |
| IMAGE | I ruin game by taking a photo (5) |
| IMARI | I ruin one's Japanese porcelain (5) |
| ANNUSMIRABILIS | I ruin a man with bliss in dissolution - a fantastic time |
| INTRUSIVE | I ruin vest, clumsily shoving nose in? |
| ANTIVIRUS | Somehow I ruin vast type of protective software (9) |
| MINIATURE | Little team I ruin unexpectedly (9) |
| RURITANIA | I ruin art that's represented a fictional kingdom (9) |
| HURRY | Quickly appear to Rev., why I ruin assembly (5,4,4) |
| INTOVIEW | Quickly appear to Rev., why I ruin assembly (5,4,4) |
