(formal)(of something bad) very severe or serious (正式)(坏事,灾祸)极其严重的,剧烈的 his death was a grievous blow. 他的死是一次沉重的打击。 the American fleet suffered grievous losses. 美国舰队损失惨重。
派生 grievously adverb grievousness noun 语源
Middle English: from Old French greveus, from grever (see grieve)