What word characterizes a person who is scornfully proud and condescending?

The term that best describes a person who is scornfully proud and condescending is "haughty." This word indicates an attitude of superiority, where an individual feels they are better than others, often accompanied by a disdainful or arrogant demeanor. Haughty individuals tend to look down on others and exhibit a lack of respect or consideration for those they perceive as inferior.

The other terms do not convey the same meaning. "Gullible" refers to someone who is easily deceived or tricked, which does not align with the prideful or condescending qualities. "Grovel" denotes an act of excessive humility or subservience, which is the opposite of being proud or condescending. Lastly, "heed" means to pay attention to or take notice of something, and it does not relate to attitudes of pride or condescension. Thus, "haughty" aptly captures the essence of the behavior described in the question.