Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class II. Words Relating to SpaceSection II. Dimensions
2. Linear Dimensions
217. Obliquity.
ACCLIVITY, rise, ascent, gradient [chiefly Brit.], grade [U. S.], khudd [Hind.], glacis, rising ground, hill, bank, declivity, downhill, dip, fall, devexity [obs.]; gentle -, rapid- slope; easy -ascent, – descent; shelving beach; talus; montagne Russe [F.]; facilis descensus Averni [L.].
steepness &c. adj.; cliff, precipice (vertical) [See Verticality]; escarpment, scarp; chevron.
[MEASURE OF INCLINATION] clinometer; sine, cosine, cotangent, angle, hypothenuse.
diagonal; zigzag.
RENDER OBLIQUE &c. adj.; sway, bias; slope, slant; incline, bend, crook; cant, tilt; distort [See Distortion].
UPHILL, rising, ascending, acclivous.
DOWNHILL, falling, descending; hanging (as, hanging gardens), declining, declivitous, proclivous [rare], declivous, devex [obs.], synclinal, anticlinal.
STEEP, abrupt, precipitous, breakneck.
DIAGONAL; transverse, transversal; athwart, antiparallel; curved [See Curvature]; loxic, loxotic, loxodromic.