诅咒通常都是一种使他人不幸的预言或许愿。除语句外有时诅咒也伴随有手势。有时候是希望一些超自然力量使他人受到任何形式的损害，也是一种针对他人的言语性报复。在最早的时候诅咒是一种魔术仪式，目的是用它来给一个人或者一个地方带来灾害。诅咒的原因往往是愤怒或者报复或者希望惩罚被诅咒的人或者地方。被诅咒的人不必在场，也不必知道他被诅咒了。

与诅咒相对的是祝福。

在日常生活中有时诅咒和谩骂也可能混淆到一起，即咒骂，比如“活见鬼”。有时诅咒也可能用来表示自己的懊恼和愤怒，比如“该死”、“你给我小心点”。同时诅咒也能体现自我保护的意愿，比如“如果你惹到我了，你就会遭报应”等等。

A curse (also called a jinx, hex or execration) is any expressed wish that some form of adversity or misfortune will befall or attach to some other entity—one or more persons, a place, or an object. In particular, "curse" may refer to a wish that harm or hurt will be inflicted by any supernatural powers, such as a spell, a prayer, an imprecation, an execration, magic, witchcraft, God, a natural force, or a spirit. In many belief systems, the curse itself (or accompanying ritual) is considered to have some causative force in the result. To reverse or eliminate a curse is called removal or breaking, and is often believed to require equally elaborate rituals or prayers.