ひっさつ 必殺 LinksSentence search for 必殺Sentence search for ひっさつKanji details for 必 and 殺Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. bringing certain death; deadly; knockout (blow) Jreibun うちの子どもたちに「おやつにしよう」と声をかけると必ずけんか喧嘩がおさ収まるので、ひそかに「ひっさつ必殺！おやつのじゅつ術」と呼んでいる。Whenever I say to my children, “Let’s have a snack,” their fights always stop, so I secretly call this “the killer snack technique.” Discussions Log in to talk about this word.