casus belli
n.
1849, from Latin casus "case" (see case, n.1) + belli, genitive of bellum "war" (see bellicose). An act justifying war.
| 词汇 | casus belli | 
| 词根词缀 | Online Etymology Dictionary casus belli n. 1849, from Latin casus "case" (see case, n.1) + belli, genitive of bellum "war" (see bellicose). An act justifying war. | 
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