fastidious fastidious /fæˈstɪdiːəs/

adjective

1. () Giving careful attention to detail; hard to please; excessively concerned with cleanliness  ( fastidious )
   giving careful attention to detail; hard to please; excessively concerned with cleanliness
    A fastidious and incisive intellect
   a fastidious and incisive intellect
    Fastidious about personal cleanliness
   fastidious about personal cleanliness
   
2. (microbiology) having complicated nutritional requirements; especially growing only in special artificial cultures  ( exacting , fastidious )
   (microbiology) having complicated nutritional requirements; especially growing only in special artificial cultures
    Fastidious microorganisms
   fastidious microorganisms
    Certain highly specialized xerophytes are extremely exacting in their requirements
   certain highly specialized xerophytes are extremely exacting in their requirements