breach
1) n. literally, a break. A breach may be a failure to perform a contract (breaking its terms), failure to do one's duty (breach of duty, or breach of trust), causing a disturbance, threatening, or other violent acts which break public tranquility (breach of peace), illegally entering property (breach of close), not telling the truth-knowingly or innocently-about title to property (breach of warranty), or, in past times, refusal to honor a promise to marry (breach of promise). 2) v. the act of failing to perform one's agreement, breaking one's word, or otherwise actively violating one's duty to other.
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