dāgraⁿgȯlȧd noun
( -s )
Etymology: French, literally, tumbling fall, from dégringoler to tumble (from dé- de- + gringoler to tumble, from Middle French) + -ade
: rapid decline or deterioration (as in strength, position, or condition) : downfall
what a dégringolade from the period of that brilliant coterie — Saturday Review
the dégringolade of a theater that once … occupied an important position — American Mercury