
- 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. 
- 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 - National Institute of Mental Health …- SAD is a type of depression characterized by a recurrent seasonal pattern, with symptoms lasting about 4−5 months out of the year. The signs and symptoms of SAD include those associated … 
- 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 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 … 
- 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 (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 … 
- Sad: Definition, Meaning, and Examples sad - usdictionary.com- May 13, 2025 · 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 … 
- sad Definition & Meaning | Britannica Dictionary- SAD meaning: 1 : not happy feeling or showing grief or unhappiness; 2 : causing a feeling of grief or unhappiness