| TUSCAN | Simplest of the five orders of Classical Roman architecture, resembling Doric (6) |
| IONIC | One of the five major orders of classical Greek architecture (5) |
| TOFFEE | Chewy buttery sweet treat that is small, cheap and recalled in a phrase emphasising a person's complete lack of ability to do the simplest of tasks, even for a very small reward (6) |
| CIPPUS | In Roman architecture, a pillar bearing an inscription (6) |
| EXEDRA | Semicircular room in Roman architecture |
| DORIC | Name the simplest of the three Greek orders of architecture (5) |
| SLOPES | Ornamental flutes or grooves carved vertically on a Doric frieze in classical architecture; or, typographic representations of characters (6) |
| METOPE | In classical architecture, a square space between two triglyphs in a Doric frieze (6) |
| NORDIC | Doric pole used for some types of skiing (6) |
| MUTULE | Square, flat bracket in Doric architecture (6) |
| PILLAR | Greek character's climbing entire central Doric column (6) |
| EUSTON | Mainline London rail station which featured a prominent Doric arch at its entrance until 1960 (6) |
| MCKIDD | Actor in 25Ac 4Ac starts to mimic colleague Kevin in Doric dialect (6) |
| ACETONE | Colourless volatile organic solvent used in nail polish removers, paint thinners etc; the simplest of the ketones (7) |
| COLUMN | It may be Doric or Ionic |
| ACETYLENE | Chemical stock, simplest of the alkynes |
| GENIUSLOCI | In classical Roman religion, the protective spirit of a place |
| GUTTA | From the Latin for "drop", one of a series of pendent ornaments in the architrave of a Doric entablature; or, derived from the latex of a tropical plant, a "resist" used in silk painting |
| AMOEBAS | A sea mob destroys the simplest of creatures (7) |
| AMOEBAE | Simplest of animals are rather basic but for all signs of resistance |
