punctilious.

Scrupulously attentive to rules, procedures, or matters of etiquette.

Use it for

Words that belong together

• punctilious observance
• punctilious manners

On the page

He was punctilious about acknowledging every contribution.

Usage notes

Primary category: psychology / human behavior. Forms: Comparative more punctilious; superlative most punctilious when comparison is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: character, behavior. Commonness: uncommon.