How to pronounce condescending:
To come down from one's superior position; to deign (to do something).
To treat (someone) as though inferior; to be patronizing (toward someone); to talk down (to someone).
(possibly nonstandard) to treat (someone) as though inferior; to be patronizing toward (someone); to talk down to (someone).
To consent, agree.
To come down.
Assuming a tone of superiority, or a patronizing attitude.
Example: "Quit talking to me in that condescending tone! you always treat me like a child!"