出典:Wiktionary
From suī (genitive reflexive pronoun) + -cīdium (“act of killing または murder”). Its use in modern Romance languages and New Latin is attested later than, and perhaps ultimately from, English suicide.[1] Suicida (“self-killer”), from suī + -cīda (“killer”), is attested in Walter of Saint Victor's Contra quatuor labyrinthos Franciae (c. 1177), but both suicidium and suicida were otherwise unfound throughout the Middle Ages.[2]
Second-declension noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | suīcīdium | suīcīdia |
| Genitive | suīcīdiī | suīcīdiōrum |
| Dative | suīcīdiō | suīcīdiīs |
| Accusative | suīcīdium | suīcīdia |
| Ablative | suīcīdiō | suīcīdiīs |
| Vocative | suīcīdium | suīcīdia |
All borrowed