| LAPEL | Extension of a collar forming a flap (5) |
| THORN | Sharp, pointed woody extension of a stem or leaf (5) |
| STYLE | Stalk-like extension of a flower's ovary that supports the stigma (5) |
| ANNEX | Extension of a building |
| DOWN | Of a collar, fastened to the shirt (6-4) |
| BUTTON | Of a collar, fastened to the shirt (6-4) |
| PERP | Object of a collar |
| LAPELS | Turnovers at the ends of a collar |
| STUDS | What fasten a collar to a shirt? (5) |
| TAB | Versatile word with meanings including an aerofoil, a bill, a cigarette, a collar insignia, a dose of LSD, a flap, a fob, a loop of a theatrical curtain, the drape itself, musical notation, a pill, a |
| NERVEFIBRE | Threadlike extension of a neuron (5,5) |
| SHIRT | An upper body garment of cotton, etc., having a collar, sleeves and especially button down the front and often worn under a jacket |
| GRUFF | Husky, when you force it to wear a collar (5) |
| ROUGH | A collar, we hear, that's scratchy (5) |
| JIBBOOM | Forward-pointing spar forming an extension of a bowsprit on a sailing ship (3,4) |
| ROLLOVER | Extension of a debt, loan etc. for a further period (8) |
| TAIL | A downward extension of a letter (4) |
| BONED | Stiffened, as a collar |
| PADRE | One wearing a collar |
| IDTAG | One might dangle from a collar |
