| UNDERGROWN | Crack or new drug, closer to heroin, not fully developed (10) |
| RHINO | Transported heroin, not ecstasy, for cash (5) |
| TOGETHER | Incognito, get heroin, not completely stable (8) |
| OPIOID | Similar to heroin or morphine |
| SOJOURN | Dwell for a time in London area, preferring joint to heroin regularly current |
| APOTHECARY | Pay to reach new drug peddler? (10) |
| BENZEDRINE | Criminal breezed in carrying new drug |
| INCHOATE | Move to China, orient not fully developed (8) |
| OSTENTATIOUS | Glitzy state, not fully developed, promises to pay creditors (12) |
| ARISEN | Ferrari's entry, not fully developed (6) |
| UNRIPE | A Parisian conceals cleavage that's not fully developed (6) |
| PREPUBESCENT | Parking on local trail around Everest's starting point is not fully developed (12) |
| CREE | Native American system of beliefs not fully developed (4) |
| THOUGH | Idea is not fully developed, however (6) |
| UNFORMED | One leaving uniform edition not fully developed |
| UNPERFORMED | As a fresh play, not fully developed without theatre backing |
| IMMATURE | A trim emu perhaps not fully developed (8) |
| INEMBRYO | Boy miner worked when not fully developed (2,6) |
| LIMACEL | A concealed shell, not fully developed, found inside some kinds of slug (7) |
| IMMURE | Wall not fully developed at shed (6) |
