con ‧ de ‧ scend ‧ ing /ˌkɒndɪˈsendɪŋ◂ $ ˌkɑːn-/ BrE AmE adjective
behaving as though you think you are better, more intelligent, or more important than other people – used to show disapproval SYN patronizing :
Professor Hutter’s manner is extremely condescending.
—condescendingly adverb