| CONCEPTUALISE | Formulate an idea, ... the problem |
| FEEL | Have an idea the cost's a pound (4) |
| GIST | General idea, the ... of the talk |
| THEORISING | Giving thought to the idea The Ring is revolting (10) |
| OBSESSION | Fixed idea the old boy took to the sitting (9) |
| ATHEART | Idea the artist grasps, fundamentally |
| VAGUENOTIONS | Nebulous ideas (... the first 2 letters + the last 2) |
| AHEAD | Early idea: the foam must be recycled (5,2,4) |
| OBSESSIVE | With a fixed idea the bosses turn and I have to follow (9) |
| THEITALIANJOB | "Hang on a minute lads, I've got a great idea": the last words of which 1969 British film? (3,7,3) |
| OFTIME | see 12ac, Early idea: the foam must be recycled (5,2,4) |
| THEORISER | Person of ideas: the alternative is HM(9) |
| DRAWACOMPARISON | *Refer to those with similar ideas ["The Heart Is A Lonely Hunter" actress Locke] |
| HILLEL | Rabbi, born in Babylonia, who was president of the Sanhedrin and the first to formulate principles of biblical interpretation |
| DRAWBRIDGE | Formulate connection to part of the defence (10) |
| DRAWUP | Formulate and stop the car outside (4,2) |
| ASTHMA | Formulate a maths problem involving tubes (6) |
| EINSTEIN | Theoretical physicist noted for the process or system of thought experiment, which he used to formulate his General and Special Theories of Relativity (8) |
| LAYDOWN | Formulate the rules as you make a deposit (3,4) |
| GALAPAGOS | Group of islands in the Pacific whose unique fauna led Darwin to formulate his theory of evolution (9) |
