Definition of remiss adjective from the Oxford Advanced American Dictionary

     

    remiss

     adjective
    adjective
    NAmE//rɪˈmɪs//
     
    [not before noun](formal)
     
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  1. 1not giving something enough care and attention synonym negligent
  2. 2 remiss (of somebody) (to do something) It was remiss of them not to inform us of these changes sooner. remiss (in something/in doing something) She had clearly been remiss in her duty.
See the Oxford Advanced Learner's Dictionary entry: remiss