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English definition of “sad”

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sad

adjective uk   /sæd/ (sadder, saddest) us  

sad adjective (NOT HAPPY)

A1 unhappy or sorry: I've just received some very sad news. She gave a rather 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 to see so many failures this year. I was sad to hear that they'd split up. informal If something looks sad, it looks worse than it should because it is not being cared for: Give those flowers some water - they're looking a bit sad.
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sad adjective (UNPLEASANT)

[before noun] not satisfactory or pleasant: The sad fact/truth is we can't afford to provide homes 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)

UK slang showing that you are not fashionable or interesting or have no friends: You enjoy reading timetables? You sad man!
sadness
noun [U] uk   /ˈsæd.nəs/ us  
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B2 Her sadness at her grandfather's death was obvious.
(Definition of sad adjective from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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