1. to lack sense, meaning, or logic; to be absurd or irrational
His explanation was completely nonsensical and nobody understood what he meant.
A explicação dele era completamente nonsensical e ninguém entendeu o que ele quis dizer.
2. to be characterized by words or language that have no meaning
The poem's rhythm was beautiful, but the words were nonsensical.
O ritmo do poema era bonito, mas as palavras não tinham sentido.