Wordnet 3.0
NOUN (1)
1.
decline to a lower status or level;
The Collaborative International Dictionary of English v.0.48:
Comedown \Come"down`\, n.
A downfall; an humiliation. [Colloq.]
[1913 Webster]
WordNet (r) 3.0 (2006):
comedown
n 1: decline to a lower status or level