- fastidious - giving and careful attention to detail; hard to please; excessively concerned with cleanliness; "a fastidious and incisive intellect"; "fastidious about personal cleanliness"
Antonyms: unfastidious, untidy
- fastidious, exacting - having complicated nutritional requirements; especially growing only in special artificial cultures; "fastidious microorganisms"; "certain highly specialized xerophytes are extremely exacting in their requirements"
Antonym: unfastidious