A precipitous decline in fortune; death or rapid deterioration, as in status or wealth. / The cause of such a fall; a critical blow or error. / An act of falling down.

(intransitive) To fall down; deteriorate; decline.

plural of downfall

falling downward

An act of falling downward. / A downfall.

plural of downfalling

Archaic spelling of downfall.

Fallen down. / (figuratively) Having undergone a defeat, or been ousted from a position of authority. / crestfallen, depressed, down in the dumps.

past participle of downfall.