Savoir faire is knowledge of what to do and say and an ability to excel in social situations.noun
Jackie Kennedy's grace and poise is an example of savoir faire.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Origin: Fr, to know (how) to do
Used by arrangement with John Wiley & Sons, Inc.
Origin: French : savoir, to know how + faire, to do.
savoir-faire - Cultural Definition
Ease and dexterity in social and practical affairs: “Peter is a friendly person, but he lacks the savoir faire required for a successful career in the foreign service.” From French, meaning “to know how to act.”