Why this word is great
FIDEICOMMISSUM — [Noun] A benefit bequeathed to a beneficiary who inherits the benefit, subject to the obligation of bequeathing it to another. From the Latin fidei (genitive of fides, "trust") + commissum, from committō ("give, entrust"), from con- ("with") + mittō ("to send"). Unlike "bequest" (a one-time transfer, unburdened by future duty) or "trust" (a managed holding, without the imperative of succession), a fideicommissum is inheritance as relay race—a baton passed with solemn duty. It is the ancestral portrait that must hang in the next heir’s hall, the land that cannot be sold but only stewarded, the diamond ring slipping from a grandmother’s finger to a granddaughter’s, decades apart. A promise stretched across generations, thinning but never breaking.