good sport

Japanese Meaning

試合に負けても礼儀正しく振る舞う人、勝敗に関わらずスポーツマンシップを示す人 / ジョークや他人のふざけた行動を素直に受け入れ、寛容な態度を持つ人

Even after losing the match, Jenna was a good sport and helped her opponent pack up the equipment.

試合に負けた後でも、ジェナは負けても礼儀正しい人で、相手の用具を片付けるのを手伝った。

Sense（1）

someone who exhibits polite behaviour even or especially when they lose

Sense（2）

someone who can take a joke or is indulgent toward being involved in others' antics.

good sports

（ plural ）