
- 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. 
- 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 … 
- 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. 
- Seasonal affective disorder (SAD) - Symptoms & causes - Mayo Clinic- Dec 14, 2021 · If you're like most people with SAD, your symptoms start in the fall and continue into the winter months, sapping your energy and making you feel moody. These symptoms … 
- SAD Synonyms: 263 Similar and Opposite Words - Merriam-Webster- Synonyms for SAD: unhappy, heartbroken, depressed, miserable, sorry, bad, melancholy, upset; Antonyms of SAD: happy, glad, joyous, joyful, cheerful, cheery, jubilant, ecstatic 
- 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. 
- 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 … 
- sad - Wiktionary, the free dictionary- Oct 9, 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 … 
- 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 … 
- sad Definition & Meaning | Britannica Dictionary- SAD meaning: 1 : not happy feeling or showing grief or unhappiness; 2 : causing a feeling of grief or unhappiness