悲观的用英语表达为"pessimistic". 悲观这个词来源于拉丁文 "pessimus"，意思是"最坏的"。例句：

He has a pessimistic outlook on life. 他对人生持悲观态度。

She always sees the glass as half empty, never half full. 她总是悲观地看待事情，从不乐观。

Despite the challenges, he remained optimistic. 尽管有许多挑战，他仍然乐观。