| Answer | Crossword Clue |
|---|---|
| HIPPED | Obsessed by a single idea. |
| HADABINONESBONNET | Was obsessed with a single idea |
| obsessionist | someone who is obsessed by a fixed idea |
| obsessionists | OBSESSIONIST, someone who is obsessed by a fixed idea |
| monomania | an abnormal obsession with a single thought or idea |
| monomanias | MONOMANIA, an abnormal obsession with a single thought or idea |
