hasta el tuétano

== Spanish == === Adjective === hasta el tuétano (invariable) (idiomatic) to the bone Synonym: hasta los tuétanos === Further reading === “hasta el tuétano, o hasta los tuétanos”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025