assuetude /asˈwi-tūd/

1. Accustomedness
2. Habit

• flat caps
• flatcar
• flatcars
• flat-chested
• flat-earther
• flat-earthers
• flat file
• flat files
• flatfish
• flatfishes
• flat-foot
• flat-footed
• flat-footedness
• flathead
• flatheads
• flatiron
• flatirons
• flatland
• flatlands
• flatlet
• flatlets
• flatline
• flatlined
• flatliner
• flatliners