1. very attentive to and concerned about accuracy and detail: "he chooses his words with fastidious care"
▪ very concerned about matters of cleanliness:"the child seemed fastidious about getting her fingers sticky or dirty"
Word Originlate Middle English: from Latin fastidiosus, from fastidium ‘loathing’. The word originally meant ‘disagreeable’, later ‘disgusted’. Current senses date from the 17th century.
