1. A decision or selection that lacks logical reasoning, purpose, or rational justification
Quitting his job without another offer lined up was a senseless choice.
Sair do seu emprego sem ter outra oferta garantida foi uma escolha sem sentido.
2. An action or decision that is illogical, foolish, or meaningless
Making such an expensive purchase when facing financial difficulties seemed like a senseless choice.
Fazer uma compra tão cara enfrentando dificuldades financeiras parecia uma escolha despropositada.