| OZONE | An allotrope of oxygen that is one of the greenhouse gases; or, a word for fresh, invigorating salty air, as breathed at the seaside (5) |
| WATER | This "vapor" is the most potent of the greenhouse gases in Earth's atmosphere, whose concentration is set by Earth's air temperatures. |
| YARD | A measure of three feet, which is the approximate length of a long glass for holding two to three pints of ale; or, a word for a court, garden or quad (4) |
| BOTTLE | From the Latin for "cask, wineskin", one of the narrow-necked vessels in a wine cellar of which a butler was originally in charge; or, a word for courage, nerve or pluck (6) |
| SQUARE | Quadrangular shape of a sailor's historical wooden trencher/platter for a meal aboard a naval ship; or, a word for fair, honest, proper or solid, thus for a hearty balanced meal (6) |
| RACKET | Common spelling, from the Arabic "palm of the hand", for a badminton bat or tennis paddle; or, a word for a clamour, din or uproarious babble (6) |
| SPARKLER | Hand-held firework used in place of a candle in a celebration cake; or a word for a diamond or a glass of champagne (8) |
| SIEGE | Form of beleaguerment practised in the art of poliorcetics; or, a word for a company of bitterns or herons (5) |
| FLAT | An apartment; a deflated tyre; or, a word for a coffee without the froth characteristic of a cappuccino (4) |
| LIQUID | Substance that is neither solid nor gaseous; or, a word for air, light or sound that is clear or pure (6) |
| OFFSET | Carbon ______ is any activity that compensates for the emission of carbon dioxide or other greenhouse gases by providing for an emission reduction elsewhere (6) |
| PUMP | Device for raising or moving liquids, compressing gases or inflating tyres; a light shoe for dancing; or, a plimsoll (4) |
| CALICO | An originally Indian cotton cloth that is known as chintz when glazed or patterned; or, a word for a cat with a tricoloured coat (6) |
| BUTTER | From "cow cheese", a churned dairy spread or "scrape" said to be liked if a "goldcup" of a celandine-like meadow flower reflects yellow under one's chin; or, a word for flattery (6) |
| RUE | The plant herb-of-grace, symbolic of regret or repentance; or, a word for a street in French (3) |
| DEMY | Old English size of printing paper roughly equal to A2; or, a word for a fellow of Magdalen College holding a kind of scholarship (4) |
| MULTIPLE | An integer that can be divided by another number without leaving a remainder; or, a word for a type of chain store (8) |
| SMACKS | Traditional gaff cutter- or ketch- rigged boats for fishing or oystering; or, a word for groups of jellyfish (6) |
| QUIVERS | Archer or arbalest's portable cases for arrows or quarrels; or; a word for groups of cobras (7) |
| CHASE | A horse race with obstacles; or, a word for a game preserve or a hunt (5) |
