Esp. of a hill or path: steep, sloping; set at a sharp angle; high. Also: rough, rugged. English regional (south-western) in later use.

Of a hill, mountain, cliff: Having an almost perpendicular face or slope, precipitous. Of a gradient or slope, a staircase, etc.: High-pitched.

Steep, precipitous; rugged.

Of a mountain, cliff, etc.: Approaching the perpendicular, difficult of ascent, steep.

Sloping steeply forwards and downwards. Obsolete.

That slopes precipitously, steep. Obsolete.

Lofty, steep, sheer, precipitous.

Steep; full of steep places; precipitous.

Of a mountain, slope, rock face, etc.: precipitous, steep. Also: (of terrain) characterized by sharp relief, rugged, jagged.

Difficult or dangerous to reach or negotiate; inaccessible; steep. Obsolete.

Steeply descending, precipitous.

That rises with a slope, sloping upwards, steep; = acclivous, adj. Cf. acclivitous, adj., declive, adj.

Lofty, high, steep, difficult to climb; also figurative.

With reference to form only (without implication of cutting or piercing). Of an ascent or descent, a rise or fall (literal or figurative): Abrupt.

Rising with a slope; sloping (esp. steeply) upward, ascending.

Of a slope: descending or ascending quickly; steep, sudden.

Having a (considerable) declivity or slope; steep.

Of the nature of, or characterized by an acclivity; having an upward slope, steep. Also figurative.

reduced to a steep face, laid bare, cut away, steep.

Steep.

Designating the side of any object that faces a flow of ice or water; also transferred. Frequently in stoss-side; stoss-and-lee attributive phr…

Of a fault-line scarp or a related feature: having a relief similar to that originally produced by the faulting; spec. where such relief results from…