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English definition of “surreptitious”

surreptitious

adjective uk   /ˌsʌr.əpˈtɪʃ.əs/ us    /ˌsɝː-/
done secretly, without anyone seeing or knowing: She seemed to be listening to what I was saying, but I couldn't help noticing her surreptitious glances at the clock.Secrecy and privacy
surreptitiously
adverb uk   /-li/ us  
Joe surreptitiously had a look in the answer book.Secrecy and privacy
surreptitiousness
noun [U] uk   /-nəs/ us  
Secrecy and privacy
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(Definition of surreptitious from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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