出典:Wiktionary
出典:『Wiktionary』 (2025/10/13 18:12 UTC 版)
Of unclear ultimate origin. The mainstream etymology, proposed by Nowicki (1978), derives the word from a compound *kusto-sd- (“who sits near the hidden/near the treasure”), where the first element is cognate to Proto-Germanic *huzdą (“hidden treasure”) (also of uncertain etymology; see more at English hoard and below) and the second element is a reduced form of Proto-Indo-European *sed- (“to sit”). However, this etymology is disputed, and De Vaan is skeptical of it, with further discussion in the below box.
custōs m (genitive custōdis); third declension
Third-declension noun.