| INFRA | Prefix for structure or red |
| DELICACY | Fineness of structure or texture; fragile or graceful beauty; a dainty morsel or special culinary luxury; tact; or, the need for said propriety (8) |
| SYNTAX | Announced wrong charge for structure of sentence? (6) |
| ROCKSOLID | Dependable, like a good base for structure (4,5) |
| STRONGHOLD | A word for a bastion, citadel, fortress or other defensive structure; or, by extension, a place or centre of predominance (10) |
| INTERNATIONALSPACESTATION | What ISS stands for, structure in low Earth orbit (13,5,7) |
| GABLE | Triangular structure or canopy added to a building for decoration over a door or window |
| CASTLE | From the Latin for "little fort", a structure or complex of buildings fortified against attack, of which the central donjon or keep in the Middle Ages was its most essential part (6) |
| FRAMES | Word for the structures or skeletons of human bodies; or, the rigid surrounds of doors, lenses, paintings or windowpanes (6) |
| MODIFY | To alter or change in structure or intent (6) |
| ANOMIE | State or condition originally described by Emile Durkheim, characterised by hopelessness in society as a result of lack of structure or an absence of norms (6) |
| ISOMORPHIC | In science, having similar or identical structure or form (10) |
| RAMPART | Defensive structure, or a form of trap for a sheep (7) |
| TOWER | Barbican, campanile, mirador or other tall structure; or, with "house", a peel-like castle in miniature (5) |
| BASE | A foundation, keystone, pedestal, plinth or other supporting structure; or, a chemical compound that neutralises an acid (4) |
| TECTONIC | Of or relating to the structure or movements of the earth's crust (8) |
| RUPTURE | The breaking or tearing of a bodily structure or part (7) |
| ARCH | Curved structure, or part of foot (4) |
| OVERSELLS | Structure or levels son builds up without foundation |
| REDESIGN | Change the structure or plan of (8) |
