General Antonyms:
* Bottom
* Base
* Foundation
* Security
* Stability
* Solid ground
* Level ground
* Safety
* Calm
Specific Antonyms:
* Plateau: If referring to a steep drop, a plateau is a flat area.
* Slope: A gentle incline instead of a sudden drop.
* Gentle incline: A gradual increase in elevation.
* Summit: The highest point, the opposite of a drop.
Figurative Antonyms:
* Prosperity (if "precipice" refers to a point of danger or ruin)
* Success (if "precipice" refers to a potential downfall)
The best antonym will depend on the specific context and the intended meaning.