sad Meaning in the Cambridge English Dictionary
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Meaning of “sad” in the English Dictionary

"sad" in British English

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sadadjective

uk   us   /sæd/ (sadder, saddest)

sad adjective (NOT HAPPY)

A1 unhappy or ​sorry: I've just ​received some very sad ​news. She gave a sad ​smile. [+ (that)] It's sad (that) the ​trip had to be ​cancelled. I'm so sad (that) you can't come. [+ to infinitive] It's sad tosee so many ​failures this ​year. I was sad tohear that they'd ​split up. informal If something ​looks sad, it ​looksworse than it should because it is not being ​cared for: Give those ​flowers some ​water - they're ​looking a little sad.
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sad adjective (UNPLEASANT)

[before noun] not ​satisfactory or ​pleasant: The sad fact/​truth is we can't ​afford to ​providehomes for all. a very sad ​state of ​affairssad to say C1 something you say when you are ​telling someone about something ​bad that ​happened: Sad to say, the ​ring was never ​found.

sad adjective (BORING)

slang showing that you are not ​fashionable or ​interesting or have no ​friends: You ​enjoyreadingtimetables? You sad man! Staying at ​home on a ​Saturdaynight is just sad.
sadness
noun [U] uk   us   /ˈsæd.nəs/
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B2 Her sadness at her grandfather's ​death was ​obvious.

SADnoun [U]

uk   us   /ˌes.eɪˈdiː/
abbreviation forseasonalaffectivedisorder: a ​medicalcondition in which a ​person does not have much ​energy and ​enthusiasm during the ​winter because of the ​reducedperiod of ​naturallight
(Definition of sad from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sad" in American English

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sadadjective

 us   /sæd/ (-dd-)

sad adjective (NOT HAPPY)

showing, ​feeling, or causing ​unhappiness or ​regret: I’ve just ​heard the saddest ​news.

sad adjective (UNPLEASANT)

very ​bad or ​regretted: The sad ​fact is that all the ​trees have got the ​virus.
Idioms
(Definition of sad from the Cambridge Academic Content Dictionary © Cambridge University Press)
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