1.
Decency is the quality of following accepted moral standards.
His sense of decency forced him to resign.
N-UNCOUNT
2.
If you say that someone did not have the decency to do something, you are criticizing them because there was a particular action which they did not do but which you believe they ought to have done.
Nobody had the decency to inform me of what was planned.
PHRASE: oft with brd-neg, V inflects, PHR to-inf [disapproval]