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  • sad
    sad
    adjective
    affected by unhappiness or grief; sorrowful or mournful.
  • sād
    sād
    noun
    the 14th letter of the Arabic alphabet.
  • SAD
    SAD
    seasonal affective disorder.
Synonyms

sad

1 American  
[sad] / sæd /

adjective

sadder, saddest
  1. affected by unhappiness or grief; sorrowful or mournful.

    to feel sad because a close friend has moved away.

    Synonyms:
    melancholy, dejected, depressed, downhearted, downcast, gloomy, discouraged, disconsolate, despondent, unhappy
    Antonyms:
    happy
  2. expressive of or characterized by sorrow.

    sad looks;

    a sad song.

  3. causing sorrow.

    a sad disappointment;

    sad news.

  4. (of color) somber, dark, or dull; drab.

  5. deplorably bad; sorry.

    a sad attempt.

  6. Obsolete. firm or steadfast.


sād 2 American  
[sahd] / sɑd /

noun

  1. the 14th letter of the Arabic alphabet.


SAD 3 American  
  1. seasonal affective disorder.


sad 1 British  
/ sæd /

adjective

  1. feeling sorrow; unhappy

  2. causing, suggestive, or expressive of such feelings

    a sad story

  3. unfortunate; unsatisfactory; shabby; deplorable

    her clothes were in a sad state

  4. informal ludicrously contemptible; pathetic

    he's a sad, boring little wimp

  5. (of pastry, cakes, etc) not having risen fully; heavy

  6. (of a colour) lacking brightness; dull or dark

  7. archaic serious; grave

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to express sadness or displeasure strongly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
SAD 2 British  

abbreviation

  1. seasonal affective disorder

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of sad1

First recorded before 1000; Middle English; Old English sæd “grave, heavy, weary,” originally “sated, full”; cognate with German satt, Gothic saths “full, satisfied”; akin to Latin satis “enough,” satur “sated,” Greek hádēn “enough.” See satiate, saturate

Origin of sād2

From Arabic

Explanation

When you're sad, you feel unhappy. If you've ever experienced the death of a pet you loved deeply, you know exactly what it means to feel sad. You might use the adjective sad informally to describe something that's pathetic or that you feel scornful or disdainful about. For example, you might comment on your friend's elaborate homemade hat by saying, "That hat is just sad," though it wouldn't be very nice of you to say it. The term "sad sack" became popular during World War II and has been used ever since to refer to an incompetent, slightly pitiful person.

Keep Reading on Vocabulary.com

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“There’s something very sad when they take football away from many, many people. Very sad. I don’t like it,” he said.

From Salon • May 10, 2026

I admit, “It strikes me as really sad that so many people are going to this app to, like, figure out how to be with their kids.”

From Slate • May 10, 2026

The sad eyes of cows “shone like water in a deep well.”

From The Wall Street Journal • May 8, 2026

“The obsession with this very narrow corner of the market, this $2 trillion slice of levered lending, is, frankly, a failure of imagination,” Rowan sad.

From Barron's • May 7, 2026

“Married other girls, sad to say. Now, Eben, if you ever mention a word of this to your aunt, there’ll be trouble for you.”

From "The Seven Wonders of Sassafras Springs" by Betty G. Birney