Supple

1. adjective

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

   Similar: limber

2. adjective

   (used of e.g. personality traits) readily adaptable

   “a supple mind”

   Similar: limber

3. adjective

   moving and bending with ease

   Similar: lissome, lissom, lithe, lithesome, slender, svelte

4. verb

   make pliant and flexible

   “These boots are not yet suppled by frequent use”