adj (-ier, -iest)
1 (of a ball) able to bounce （指球）有弹性的.
2 (of a person) lively （指人）活跃的.

adj
a bouncy ball etc quickly moves away from a surface after it has hit it
a bouncy surface is made of a substance that makes people move up and down when they are on it
　The new bed is nice and bouncy.
someone who is bouncy is always very happy, confident, and full of energy
hair or material that is bouncy goes back to its shape when you press it
>bouncilyadv
>bouncinessn[U]