condescend

1. VERB

If someone condescends to do something, they agree to do it, but in a way which shows that they think they are better than other people and should not have to do it.

• When he condescended to speak, he contradicted himself three or four times in the space of half an hour.
  

2. VERB

If you say that someone condescends to other people, you are showing your disapproval of the fact that they behave in a way which shows that they think they are superior to other people.

• Don't condescend to me.
  

... Cobuild

intr.v. 

1. To descend to the level of one considered inferior; lower oneself. (See Synonyms at stoop1.)

2. To deal with people in a patronizingly superior manner.

[Middle English condescenden, from Old French condescendre, from Late Latin condescendere : Latin com-, intensive pref.; see com- + descendere, to descend; see descend.]

... Am-Heirtage