supple

Adjective

• (used of persons' bodies) capable of moving or bending freely

• (used of e.g. personality traits) readily adaptable
  • a supple mind
    
  • a limber imagination
    

• moving and bending with ease

Verb

• make pliant and flexible
  • These boots are not yet suppled by frequent use
    

Related words

• Synonyms: 
  limber , lissome , lissom , lithe , lithesome , slender , svelte , sylphlike