Disdainful means scornful and arrogant. To be disdainful is to act mean and superior.

If you're acting haughty, imperious, lordly, overbearing, prideful, sniffy, supercilious, or swaggering, you're acting disdainful. The great Michael Jordan was known to be disdainful of his opponents — and even teammates who couldn't keep up with him. Arrogant people with their nose in the air are disdainful. This can also have an even harsher sense, meaning contemptuous. Either way, that person who gave you the disdainful look doesn’t like you (or at least something you did) very much.

Definitions of disdainful

adj having or showing arrogant superiority to and disdain of those one views as unworthy

“some economists are disdainful of their colleagues in other social disciplines”
haughty, imperious, lordly, overbearing, prideful, sniffy, supercilious, swaggering
feeling self-respect or pleasure in something by which you measure your self-worth; or being a reason for pride

adj expressing extreme contempt

contemptuous, insulting, scornful
exhibiting lack of respect; rude and discourteous

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