| Main Entry: | |
| Part of Speech: | noun |
| Definition: | uprising of earth's surface; pile |
| Synonyms: | acclivity, ascent, bluff, butte, cliff, climb, down, drift, dune, elevation, eminence, esker, fell, gradient, headland, heap, height, highland, hillock, hillside, hilltop, hummock, inclination, incline, knoll, mesa, mound, mount, precipice, prominence, promontory, protuberance, range, ridge, rise, rising ground, shock, slope, stack, summit, talus, tor, upland |
| Antonyms: | canyon, ditch, gulley |
| Main Entry: | bluff |
| Part of Speech: | noun |
| Definition: | precipice |
| Synonyms: | bank, cliff, crag, escarpment, headland, hill, mountain, peak, promontory, ridge, rock |
| Main Entry: | decline |
| Part of Speech: | noun |
| Definition: | downward change in value, position |
| Synonyms: | declivity, decrease, depression, descent, dip, downslide, downswing, downtrend, downturn, drop, drop-off, fall-off, hill, incline, lapse, loss, lowering, pitch, sag, slide, slip, slope, slump |
| Notes: | one declines (or accepts) something that is offered; one refuses (or agrees) to accept something offered |
| Antonyms: | ascent, increase, rise |
| Main Entry: | descent |
| Part of Speech: | noun |
| Definition: | moving down; lowering |
| Synonyms: | cave-in, coast, coming down, crash, declension, declination, decline, declivity, dip, downgrade, droop, drop, drop-off, fall, falling, grade, gradient, header, hill, inclination, incline, landslide, plummeting, plunge, plunging, precipitation, prolapse, sag, settlement, sinkage, sinking, slant, slide, slip, slope, swoop, tailspin, topple, tumble |
| Antonyms: | ascension, ascent, elevation, increase, rise, upgrade |
| Main Entry: | downgrade |
| Part of Speech: | noun |
| Definition: | slope |
| Synonyms: | decline, declivity, descent, dip, hill, inclination, pitch |
| Antonyms: | upgrade |
| Main Entry: | drift |
| Part of Speech: | noun |
| Definition: | accumulation |
| Synonyms: | alluvion, bank, batch, bunch, bundle, clump, cluster, deposit, heap, hill, lot, mass, mound, mountain, parcel, pile, set, shock, stack |
| Main Entry: | elevation |
| Part of Speech: | noun |
| Definition: | height; high ground |
| Synonyms: | acclivity, altitude, ascent, boost, eminence, heave, hill, hillock, hoist, levitation, mountain, platform, ridge, rise, roof, top, uplift, upthrow |
| Notes: | an elevation is a two-dimensional scale drawing of something as if one were viewing it from one side; a section is a two-dimensional scale drawing of one part or detail of an object or structure; and a plan is a two-dimensional scale drawing showing the view of an object or structure as if one were looking down on it from above |
| Antonyms: | depression, lowness |
| Main Entry: | eminence |
| Part of Speech: | noun |
| Definition: | high ground |
| Synonyms: | altitude, elevation, height, highland, highness, hill, hillock, knoll, loftiness, peak, project, prominence, promontory, raise, ridge, rise, summit, upland |
| Antonyms: | flat, low ground |
| Main Entry: | grade |
| Part of Speech: | noun |
| Definition: | incline, slope |
| Synonyms: | acclivity, ascent, bank, cant, climb, declivity, descent, downgrade, elevation, embankment, gradient, height, hill, inclination, inclined plane, lean, leaning, level, obliquity, pitch, plane, ramp, rise, slant, tangent, tilt, upgrade |