| UNHOOK | Remove a fastening from (6) |
| UNBUCKLE | Remove a fastening from (8) |
| UNDO | To loosen or remove a fastening (4) |
| UNBIND | Remove the fastenings from |
| VELCRO | A fastening consisting of two strips of nylon fabric, one of which has tiny hooked threads and the other a coarse surface (6) |
| BUCKLE | Cave in like a fastening (6) |
| UNBOLT | Draw back (a fastening) (6) |
| JACKET | Long-sleeved outer garment with a fastening at the front (6) |
| UNSNAP | Open a fastening |
| LOCK | Word for a device or mechanism for fastening, from which a type of canal enclosure derives its name (4) |
| UNPIN | Remove fastening from (5) |
| UNBUTTON | To remove the fastenings from a garment (8) |
| ATTACHMENT | From "arrest, seize", a fastening in the form of a fitting or a fixture; a file affixed to an email; or, a fetter of fidelity, fondness or friendship (10) |
| UNTIE | Remove fastenings from |
| UNSTRAP | Remove fastenings from |
| UNCLASP | Remove the fastenings from (7) |
| TIE | A fastening such as a bow, dressing-gown cord, four-in-hand, knot, ribbon, shoelace or string; an obligation; a bond; equality in score, aka a draw; or, a slur connecting two musical notes (3) |
| TACK | A fastening such as a basting stitch, drawing pin, nail, stud, tingle or a rope for securing a sail; food, as in a hard ship biscuit; or, bridles, saddlery and other stable gear collectively (4) |
| DOORLOCK | A fastening for a door operated by a key or combination (4,4) |
| LIANA | A fastening device put up a vine |
