Condescend
/ˌkɒndɪˈsɛnd/
verb
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).
Synonyms: descend, acquiesce, deign, stoop, vouchsafe, yield, belittle, patronize