记忆力减退是记忆包括识记、保持、再认或回忆三个基本过程，可分为瞬时记忆、近记忆、远记忆。记忆的三个基本过程普遍减退称为记忆力减退，临床多见，是精神障碍的常见表现。

喜忘，汉语拼音xiwang，意思是记忆力减退，善忘。

Amnesia is a deficit in memory caused by brain damage or disease, but it can also be caused temporarily by the use of various sedatives and hypnotic drugs. The memory can be either wholly or partially lost due to the extent of damage that was caused. There are two main types of amnesia: retrograde amnesia and anterograde amnesia. Retrograde amnesia is the inability to retrieve information that was acquired before a particular date, usually the date of an accident or operation. In some cases the memory loss can extend back decades, while in others the person may lose only a few months of memory. Anterograde amnesia is the inability to transfer new information from the short-term store into the long-term store. People with anterograde amnesia cannot remember things for long periods of time. These two types are not mutually exclusive; both can occur simultaneously.

记忆力下降是一种病症，临床上尤以40～60岁的人最为多见，他们迫切渴望知识更新，却常常感到力不从心；一些中青年男性，由于社会压力引发心理问题，感到工作紧张、焦虑、易怒，导致记忆力下降。

A personality disorder characterized by an indirect resistance to demands for adequate social and occupational performance; anger and opposition to authority and the expectations of others that is expressed covertly by obstructionism, procrastination, stubbornness, dawdling, forgetfulness, and intentional inefficiency. (Dorland, 27th ed)