Verbs

(v)condescendbehave in a patronizing and condescending manner
(v)condescend, deign, descenddo something that one considers to be below one's dignity
(v)condescend, stoop, lower oneselfdebase oneself morally, act in an undignified, unworthy, or dishonorable way“I won't stoop to reading other people's mail”
(v)patronize, patronise, condescendtreat condescendingly