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  1. Seasonal affective disorder (SAD) - Mayo Clinic

    Dec 14, 2021 · Seasonal affective disorder (SAD) is a type of depression that's related to changes in seasons — SAD begins and ends at about the same times every year. If you're like most …

  2. SAD Definition & Meaning - Merriam-Webster

    The meaning of SAD is affected with or expressive of grief or unhappiness : downcast. How to use sad in a sentence.

  3. Seasonal Affective Disorder - National Institute of Mental Health …

    Information about seasonal affective disorder (SAD), a type of depression, including signs and symptoms, how SAD is diagnosed, causes, and treatment options.

  4. SAD | English meaning - Cambridge Dictionary

    SAD definition: 1. unhappy or sorry: 2. If something looks sad, it looks worse than it should because it is not…. Learn more.

  5. Sadness - Wikipedia

    Sadness is an emotional pain associated with, or characterized by, feelings of disadvantage, loss, despair, grief, helplessness, disappointment and sorrow. An individual experiencing sadness …

  6. SAD definition and meaning | Collins English Dictionary

    If you are sad, you feel unhappy, usually because something has happened that you do not like. The relationship had been important to me and its loss left me feeling sad and empty. I'm sad …

  7. sad - Wiktionary, the free dictionary

    Jun 3, 2025 · 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 …

  8. sad Definition & Meaning | Britannica Dictionary

    SAD meaning: 1 : not happy feeling or showing grief or unhappiness; 2 : causing a feeling of grief or unhappiness

  9. It’s OK to Be Sad: 6 Reasons and How to Manage Sadness

    Jan 27, 2022 · Sadness probably isn’t one of your favorite feelings, but it’s still a valuable emotion, and it’s OK to be sad. While it might be uncomfortable, letting sadness in can come with many …

  10. Seasonal Affective Disorder - What is SAD? | SAMHSA

    Apr 24, 2023 · Seasonal affective disorder, or SAD, is a condition in which some people experience a serious mood change when the seasons change. Those mood changes could be …