To condescend is to talk to someone in a way that makes it clear you believe that you are better and smarter.(verb)
An example of condescend is if you explain something to an adult with slow, deliberate words as if you were talking to a child.
See condescend in Webster's New World College Dictionary
Origin: ME condescenden < OFr condescendre < LL(Ec) condescendere, to let oneself down, condescend < L com-, together + descendere, descend
See condescend in American Heritage Dictionary 4
intransitive verb con·de·scend·ed, con·de·scend·ing, con·de·scends
Origin: Middle English condescenden
Origin: , from Old French condescendre
Origin: , from Late Latin condēscendere
Origin: : Latin com-, intensive pref.; see com-
Origin: + dēscendere, to descend; see descend.
Learn more about condescend