grievous
adj. 极其严重的，使人痛苦的
例句
He had been the victim of a grievous injustice.
他曾遭受极不公正的待遇。
《牛津词典》
He survived in spite of suffering grievous injuries.
尽管遭受重伤，他仍然活下来了。
《柯林斯英汉双解大词典》
Mr. Morris said the victims had suffered from a very grievous mistake.
莫里斯先生说受害者们为一个非常严重的失误而受苦。
