Noun: punctilio púngk'ti-li-ow
- Strict observance of formalities
"The diplomat's punctilio impressed the foreign dignitaries"
- A fine point of etiquette or petty formality
"He observed every punctilio of formal dining etiquette"
Derived forms: punctilios
Type of: etiquette, honoring [US], honouring [Brit, Cdn], observance