Definition of surreptitious adjective from the Oxford Advanced American Dictionary

     

    surreptitious

     adjective
    adjective
    NAmE//ˌsərəpˈtɪʃəs//
     
     
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  1. 1done secretly or quickly, in the hope that other people will not notice synonym furtive
  2. 2 She sneaked a surreptitious glance at her watch.
surreptitiously
 
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adverb
See the Oxford Advanced Learner's Dictionary entry: surreptitious