downfall
down|fall /d'aʊnfɔːl/ (downfalls)
1 [N-COUNT] also N in pl, usu with poss
The downfall of a successful or powerful person or institution is their loss of success or power.
His lack of experience had led to his downfall.
≠ rise
2 [N-COUNT] usu with poss
The thing that was a person's downfall caused them to fail or lose power.
His honesty had been his downfall...
= undoing
1 [N-COUNT] also N in pl, usu with poss
The downfall of a successful or powerful person or institution is their loss of success or power.
His lack of experience had led to his downfall.
≠ rise
2 [N-COUNT] usu with poss
The thing that was a person's downfall caused them to fail or lose power.
His honesty had been his downfall...
= undoing