Punctilious
adjective /pʌŋkˈtɪlɪəs/ — Very attentive to details of conduct or procedure — precise to a point of ceremony.
Definition
Showing great attention to detail or correct behaviour — particularly in formal or social contexts. The punctilious person observes the finer points of conduct that others might not notice.
Beyond the definition
Punctilious is fastidious applied to etiquette. The punctilious person notices when the fork is on the wrong side, who replies within twenty-four hours, who spells your name correctly the first time. It can be a delight or a pressure, depending on which side of it you're on.
Origin & history
Latin 'punctum' (point) + Italian 'puntiglio' (fine point) → French 'pointilleux.' The 'point' in punctilious is the fine point of conduct — a punctilio is a precise detail of etiquette.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
She was punctilious about acknowledgments — everyone who helped was named.
He was punctilious in his record-keeping, which saved the project twice.
Punctilious is not perfectionist; it's more ceremonial — the fine points matter precisely because they signal care.
Synonyms
meticulous, scrupulous, fastidious, precise, exacting
Antonyms
careless, slapdash, casual
Related words
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Carefully arranging objects on tray

An adult in a minimalist room is carefully arranging three simple objects on a wooden tray with deliberate balance.
The adult's extreme attention to the position of the objects shows a punctilious devotion to detail. This concern for the finer points creates a balance that others might not notice, reflecting a character that insists on precise, correct order.
Image credit: Wordspun · AI-generated conceptual illustration