(n.) A downfall; an humiliation.

abasement anticlimax backset bafflement balk bathos belittling betrayed hope blasted expectation blighted hope blow breakdown buffet cascade cataract check chute collapse contempt crash cropper cruel disappointment dash dashed hope debacle debasement decadence decadency declension declination decline decrial defeat deflation defluxion deformation degeneracy degenerateness degeneration degradation demotion depravation depravedness depreciation derogation descending descension descent deterioration detraction devolution disappointment disapproval discomfiture discrediting disgrace disillusionment disparagement dissatisfaction down downbend downcome downcurve downfall downflow downgrade downpour downrush downtrend downturn downward mobility downward trend drop dropping dump dying ebb effeteness embarrassment fading failing failure failure of nerve faint praise fall fallen countenance falling falling-off fiasco fizzle foiling forlorn hope frustration gravitation hangdog look hope deferred humbled pride humiliation inclination indignity involution knocking lapse letdown loss of tone lukewarm support minimizing mirage mortification nose dive plummeting pounce pratfall put-down putting down rapids regression retrocession retrogradation retrogression reversal reverse reverse of fortune ruin self-abasement self-abnegation self-diminishment setback setdown severe check shame shamefacedness shamefastness slighting slippage slump smash sore disappointment sour grapes stoop stumble swoop tailspin tantalization tease throwback tumble undoing wane waterfall wreck