The adjective CONDESCENDING, pronounced /ˌkɑːndɪˈsɛndɪŋ/, means showing that you believe you are more intelligent or better than other people:
Why do you always talk to me in such a condescending tone?
This remark was rather condescending to me.
The condescending attitude of the government led to protests in all major cities.
I apologize if you feel I was condescending in any way.
I don’t like this condescending smile of yours.
Here’s the video version of the article: