steepest
最陡
Steep, a. [Compar. Steeper superl. Steepest.]
1. Making a large angle with the plane of the horizon; ascending or descending rapidly with respect to a horizontal line or a level; precipitous; as, a steep hill or mountain; a steep roof; a steep ascent; a steep declivity; a steep barometric gradient.
2. Difficult of access; not easily reached; lofty; elevated; high. [Obs.]
3. Excessive; as, a steep price. [Slang]