basis /bāˈsis/

1. The foundation, or that on which a thing rests
2. The groundwork or first principle
3. The fundamental ingredient
4. A pedestal

• flatlings
• flatlining
• flatlong
• flatly
• flatmate
• flatmates
• flatness
• flatnesses
• flat out
• flatpack
• flatpacks
• flat-panel
• flat playing field
• flat race
• flat races
• flat racing
• flat rate
• flat rates
• flats
• flat-screen
• flatshare
• flatshares
• flat spin
• flatted
• flatten