| BORROWED | Undue extension of life (8,4) |
| BORROWEDTIME | An unexpected extension of life, usually of uncertain length (8,4) |
| CONTINUATION | An extension of something else |
| MCMURDOSOUND | Bay which forms the western extension of the Ross Sea (7,5) |
| RENEWAL | The extension of the period of a loan of a library book or the validity of a contract, lease, licence, subscription etc (7) |
| UVULA | Small fleshy flap of tissue that hangs in the back of the throat and is an extension of the soft pal |
| MUSANDAM | Omani exclave sitting on the northeastern extension of the Arabian Peninsula, separating the Gulf of Oman and the Persian Gulf to form the Strait of Hormuz. (8) |
| SUFFRAGETTE | Advocate of the extension of franchise to women (11) |
| LOCHMOY | Also known as the Laggan Reservoir, this body of water is considered to be an extension of Loch Lag |
| NOAHS | - Ark; nickname of a former roof extension of Mansion House, London (5) |
| SUFFRAGIST | An advocate of the extension of the right to vote, especially to women (10) |
| ANTLER | Extension of the skull found in members of the - deer family (6) |
| PECHORA | ? Sea, southeastern extension of the Barents Sea south of Novaya Zemlya |
| TENDRIL | Extension of plant tried coiling round north end of wall (7) |
| TROUGH | Elongated region of low atmospheric pressure, especially an extension of a depression (6) |
| SWALLOWTAIL | Any of various butterflies such as Papilio machaon having a tail-like extension of each hind wing (11) |
| MONET | Painter of impressions whose love of capucines (nasturtiums), coquelicots (poppies), irises, nympheas (spatterdocks) and all other flowers truly blossomed in his living masterpiece of a garden in Give |
| ELL | Extension of E. 50's |
| BACK | Involuntary extension of troop tours |
| AISLE | Extension of the nave in a church (5) |
