Sardonic

Sardonic

<sar-don-nik>

sarcastic; mocking; scathing;

being scornful in a funny but sneering way.

He was mean and insulting while he wore a sardonic smile.

Memory trick:
sardonic reminds of sadistic

At work:
Your report was too sardonic. Please rewrite it without the rude comments.

(c) 2015 E. Carruthers