[EinNYC]

den·i·grate

ˈdenəˌɡrāt/

verb
criticize unfairly; disparage.
"there is a tendency to denigrate the poor"
synonyms: disparage, belittle, deprecate, decry, cast aspersions on, criticize, attack;

[Fresh Wind]

I think your sarcasm detector needs a new battery!