Simple Definition of punctilious
: very careful about behaving properly and doing things in a correct and accurate way
Full Definition of punctilious
: marked by or concerned about precise accordance with the details of codes or conventions
Examples of punctilious in a sentence
She's very punctilious about grammar.
<old-money aristocrats with a punctilious sense of propriety>
First Known Use of punctilious
Synonym Discussion of punctilious
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