regrettable
adj
that is or should be regretted 令人痛惜的; 令人遗憾的; 可悲的; 不幸的
regrettable failures, losses, mistakes, etc 令人惋惜的失败、 损失、 错误等
Her rudeness was most/highly regrettable. 她粗俗无礼, 令人遗憾.
I was doing some exercises on the high-and-low bars. When I landed, I fell forward and hurt myself. Someone was standing too close and I knocked into him and fell over onto my shoulder.