sad (third-person singular simple present sads, present participle sadding, simple past and past participle sadded) (transitive, archaic) To make melancholy; to sadden or grieve (someone). quotations
As an adjective, "sad" primarily refers to feeling or showing unhappiness or sorrow. This is its most common usage, applied to both people and situations. It also describes something that evokes feelings of sadness, such as tragic events or heart-wrenching stories.
feeling unhappiness or grief: to feel sad. expressing or causing sorrow: a sad song. sorry: a sad attempt to make a joke. sad•ly, adv.: She shook her head sadly as she read about the famine. sad (sad), adj., sad•der, sad•dest. sorrowful or mournful: to feel sad because a close friend has moved away.
The word sad has been part of the English language for many centuries but did not mean "unhappy" until the 1300s. In Old English, "sad" meant "satisfied." Later, it came to mean "tired or weary of."
