grievous

/ˈɡriːvəs/📚 21326四级六级托福GREsat
If you describe something such as a loss as grievous, you mean that it is extremely serious or worrying in its effects. 极其严重的; 令人担忧的

adjective [原级]极其严重的,使人痛苦的

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。

grievous

-ous ⌜ 表示具有某种性质的 - indicating having the quality of ~ ⌟
griev(=gra重的) + ous → 心情沉重的 → 令人忧伤的
单词造句:
网友用“Grievous”造句精选
He survived in spite of suffering grievous injuries. 尽管遭受重伤,他仍然活下来了。
He had been the victim of a grievous injustice. 他曾遭受极不公正的待遇。