Definition:
Condescending- acting superior; deliberately stooping to inferiors.


Example:
“We, the inhabitants of the planet you call Mars, have for many years observed your experiments toward achieving interplanetary travel. These experiments must cease. Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization…..”
“Loophole,” by Arthur C. Clarke


Explanation:
The speaker in this passage (the ruler of the Martian race) acts like the Martians are much better than humans in every way. He makes a great show of this superiority. Saying “our study of your race has convinced us that you are not fitted to leave your planet…” gives a very strong impression that the Martians are the masters and that the humans are mere children.