sa·voir-faire 
(săv′wär-fâr)
(săv′wär-fâr)n.
The ability to say or do the appropriate or graceful thing in social situations.
[French : savoir, to know how + faire, to do.]
- support system
- supposable
- supposably
- suppose
- supposed
- supposedly
- supposing
- supposition
- suppositional
- suppositionally
- suppositious
- supposititious
- supposititiously
- suppositive
- suppositively
- suppository
- suppress
- suppressant
- suppressible
- suppression
- suppressive
- suppressor
- suppurate
- suppuration
- suppurative