valueless

adj. sin valor, desvalorado, desvalorizado, desvirtuado

sin valor

sin valor, inútil, inservible, insignificante, baladí, fútil, despreciable, desvalorizado, desvirtuado

Ex: But the biggest impact was felt when boxes appeared, sometimes anonymously, filled with old books and magazines -- mostly valueless.
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*be valueless = no tener valor
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*render + valueless = anular, quitar el valor, desvalorizar

(adj.) = sin valor
Ex: But the biggest impact was felt when boxes appeared, sometimes anonymously, filled with old books and magazines -- mostly valueless.
----
* be valueless = no tener valor
* render + valueless = anular, quitar el valor, desvalorizar