1. A weak, unconvincing, or flawed line of reasoning presented to support a position or claim
That's a poor argument because it relies on anecdotal evidence rather than facts.
Esse é um argumento fraco porque se baseia em evidência anedótica em vez de fatos.
2. A logical fallacy or reasoning that fails to adequately support its conclusion
His poor argument against climate change was easily refuted by scientific data.
Seu argumento fraco contra as mudanças climáticas foi facilmente refutado por dados científicos.