| GELATINE | Name, from Latin for "to freeze", for a substance used to set jelly (8) |
| CODERBLOCK | Moment of brain freeze for a programmer? |
| CRABAPPLE | Comtesse de Paris, Gorgeous or Sugar Tyme, a garden, orchard, or hedgerow tree in the genus Malus with pectin-rich fruits used to set jelly or crushed for verjuice (4-5) |
| MORDANT | An adhesive for gold leaf, or, a substance used to set dyes on textiles such as palampore (7) |
| PLASTEROFPARIS | Substance used to set broken limbs (7,2,5) |
| GEL | Set / jelly |
| FLAMINGO | Wader that derives its pink colour from its diet of shrimp and its name from Latin for a visible part of fire (8) |
| APHICIDE | A substance used to kill small bugs that suck sap from plants (8) |
| FRACTION | From the Latin for "to break", word used since medieval times for a non-whole number; or, a proportion (8) |
| ABRASIVE | A substance used to clean by scratching and grinding (8) |
| SOFTENER | General word for a substance such as zeolite for hard water or fabric conditioner for laundry (8) |
| OBITUARY | A published announcement of a death, from the Latin for 'to fall' |
| PHOSPHOR | General term for a substance, such as the coating on a cathode-ray tube, that emits light when irradiated with particles of electromagnetic radiation (8) |
| ADHESIVE | What is a substance used for sticking things together? (8) |
| CONCRETE | A substance used for building made by mixing cement, sand, small stones and water (8) |
| GLUTTONY | Sin whose name derives from the Latin for "to gulp down or swallow" |
| LAVENDER | Herb whose name is derived from the Latin for "to wash" |
| MEDICINE | Name a substance used for treating disease |
| PRESERVE | Freeze for keeping (8) |
| CROSSBOW | Weapon (used to set off a quarrel?) (8) |
