fratricidal
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/ˌfrætrɪˈsaɪdl/
🇬🇧
/ˌfrætrɪˈsaɪdl/
related to or involving the act of killing one's own brother or sister
The two brothers engaged in a fratricidal conflict over their inheritance.
兩兄弟因繼承產生兄弟相殘的衝突。