capable of being bent, usually without breaking; easily bent

a flexible ruler.

susceptible of modification or adaptation; adaptable

a flexible schedule.

willing or disposed to yield; pliable

a flexible personality.

a flexible substance or material, as rubber or leather.

noun

bounce , ductility , elasticity , give , malleability , malleableness , plasticity , pliability , pliableness , pliancy , pliantness , resilience , resiliency , spring , springiness , suppleness