sick - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “sick”

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sick

adjective  us   /sɪk/

sick adjective (ILL)

physically or mentally ill; not well or healthy: We’ve got a sick cat. I feel sick. Only a sick mind could think of such things. He’s out sick (= absent because of illness). Samantha called in sick (= called to say she was ill and not coming to work).

sick adjective (VOMITING)

[-er/-est only] feeling as if you are going to vomit: She was so nervous she got sick. I feel sick to my stomach (= likely to vomit).

sick adjective (UNPLEASANT)

[-er/-est only] causing or experiencing unpleasant feelings: Michelle is sick about not getting that job. I can’t believe she lost the election – it just makes me sick.
(Definition of sick from the Cambridge Academic Content Dictionary © Cambridge University Press)
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