| Main Entry: | |
| Part of Speech: | noun |
| Definition: | decay, deterioration |
| Synonyms: | atrophy, debasement, declination, decline, decrease, depravation, devolution, downfall, downgrade |
| Antonyms: | development, improvement |
| 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: | descent |
| Part of Speech: | noun |
| Definition: | deterioration |
| Synonyms: | abasement, anticlimax, cadence, comedown, debasement, decadence, decline, degradation, discomfiture, down, downcome, downfall, lapse, pathos, slump |
| Antonyms: | improvement, upgrade |
| Main Entry: | deterioration |
| Part of Speech: | noun |
| Definition: | decay, degeneration |
| Synonyms: | abasement, adulteration, atrophy, corrosion, crumbling, debasement, decadence, decaying, declension, declination, decline, decomposition, degradation, degringolade, depreciation, descent, devaluation, dilapidation, disintegration, dislocation, disrepair, downfall, downgrade, downturn, drop, fall, lapse, lessening, perversion, retrogression, rotting, ruin, slump, spoiling, vitiation, worsening |
| Antonyms: | betterment, building, construction, development, improvement |
| Main Entry: | diminution |
| Part of Speech: | noun |
| Definition: | lessening, reduction |
| Synonyms: | abatement, alleviation, contraction, curtailment, cut, cutback, decay, decline, decrease, deduction, retrenchment, weakening |
| Antonyms: | development, enlargement, expansion, growth, increase |
| Main Entry: | downgrade |
| Part of Speech: | noun |
| Definition: | slope |
| Synonyms: | decline, declivity, descent, dip, hill, inclination, pitch |
| Antonyms: | upgrade |
| Main Entry: | downturn |
| Part of Speech: | noun |
| Definition: | drop |
| Synonyms: | decline, descent, deterioration, dip, downtick, fall, plunge, retreat, sinking, slide, slump |
| Main Entry: | drop |
| Part of Speech: | noun |
| Definition: | decrease |
| Synonyms: | cut, decline, descent, deterioration, dip, downfall, downslide, downswing, downtrend, downturn, fall, fall-off, landslide, lapse, lowering, precipitation, reduction, sag, slide, slip, slump, tumble, upset |
| Antonyms: | increase, rise |
| Main Entry: | eclipse |
| Part of Speech: | noun |
| Definition: | shadowing of the sun |
| Synonyms: | concealment, darkening, decline, diminution, dimming, extinction, extinguishment, obliteration, obscuration, occultation, penumbra, shading, shroud, veil |