sup ‧ ple /ˈsʌp ə l/ BrE AmE adjective
[ Date: 1200-1300 ; Language: Old French ; Origin: souple , from Latin supplex 'bending under, willing to obey' ]
1 . someone who is supple bends and moves easily and gracefully OPP stiff :
She exercises every day to keep herself supple.
2 . leather, skin, wood etc that is supple is soft and bends easily
—suppleness noun [uncountable]