Final answer:
To be supercilious means to be arrogant and haughty, displaying a sense of superiority and disdain for others.
Step-by-step explanation:
To be supercilious means to be arrogant; haughty. It is a behavior or attitude that displays superiority and disdain for others. Someone who is supercilious may have a sense of entitlement or believe that they are better than others.
Learn more about Meaning of the word supercilious