disdain

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To regard or treat with haughty contempt: synonym: despise.
• transitive verb To consider or reject (doing something) as beneath oneself.
• noun A feeling or show of contempt and aloofness; scorn.

from The Century Dictionary.

• To think unworthy or worthless; reject as unworthy of notice or of one's own character; look upon with contempt and aversion; contemn; despise: as, to disdain a mean action.
• To fill with scorn or contempt.
• Synonyms Despise, etc. (See scorn), scout, spurn. See comparison of nouns under arrogance.
• To be filled with scorn or contempt.
• noun A feeling of contempt mingled with aversion; contempt; scorn.
• noun The state of being despised; the state of feeling one′ s self disgraced; ignominy; disgrace.
• noun That which is worthy of disdain.
• noun Synonyms pride, Presumption, etc. (see arrogance), scornfulness, contemptuousness.See scorn, v.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To be filled with scorn; to feel contemptuous anger; to be haughty.
• transitive verb To think unworthy; to deem unsuitable or unbecoming.
• transitive verb To reject as unworthy of one's self, or as not deserving one's notice; to look with scorn upon; to scorn, as base acts, character, etc.
• noun A feeling of contempt and aversion; the regarding anything as unworthy of or beneath one; scorn.
• noun obsolete That which is worthy to be disdained or regarded with contempt and aversion.
• noun obsolete The state of being despised; shame.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable A feeling of contempt or scorn.
• verb transitive To regard (someone or something) with strong contempt.
• verb intransitive, obsolete To be indignant or offended.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a communication that indicates lack of respect by patronizing the recipient
• verb reject with contempt
• noun lack of respect accompanied by a feeling of intense dislike
• verb look down on with disdain