Usage Note
Responsabilidad is a long but very common noun in formal and civic contexts. The adjective form is responsable, and the verb is responsabilizarse de (to take responsibility for). Unlike the English 'responsible,' the adjective responsable does not change for gender: un hombre responsable / una mujer responsable.
Examples
"Tienes la responsabilidad de avisar."
Natural Translation
You have the responsibility to notify them.

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