noun, plural -dies, adjective, -di⋅er, -di⋅est.| 1. | a man who is excessively concerned about his clothes and appearance; a fop. |
| 2. | Informal. something or someone of exceptional or first-rate quality: Your reply was a dandy. |
| 3. | characteristic of a dandy; foppish. |
| 4. | Informal. fine; excellent; first-rate: a dandy vacation spot. |