na-adjective
Describes something that can stretch and return to its original shape, or a system, plan, or attitude that can adapt to changing circumstances.
See also: 弾力
この素材はとても弾力的で、伸ばしてもすぐに元に戻る。
This material is very elastic; even if you stretch it, it quickly returns to its original shape.
彼の考え方は弾力的で、新しい提案にもすぐに対応できる。
His way of thinking is flexible, so he can quickly adapt to new proposals.