Definition of fastidious adjective from the Oxford Advanced Learner's Dictionary

     

    fastidious

     adjective
    adjective
    BrE BrE//fæˈstɪdiəs//
     
    ; NAmE NAmE//fæˈstɪdiəs//
     
     
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  1. 1being careful that every detail of something is correct synonym meticulous Everything was planned in fastidious detail. He was fastidious in his preparation for the big day.
  2. 2(sometimes disapproving) not liking things to be dirty or untidy She wasn't very fastidious about personal hygiene.
  3. Word Origin late Middle English: from Latin fastidiosus, from fastidium ‘loathing’. The word originally meant ‘disagreeable’, later ‘disgusted’. Current senses date from the 17th cent.
See the Oxford Advanced American Dictionary entry: fastidious