- 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(sometimes disapproving) not liking things to be dirty or untidy She wasn't very fastidious about personal hygiene. Word Originlate Middle English: from Latin fastidiosus, from fastidium ‘loathing’. The word originally meant ‘disagreeable’, later ‘disgusted’. Current senses date from the 17th cent.
Check pronunciation: fastidious
