infalível
1. incapable of being wrong or making mistakes; never failing
The coach's strategy proved to be infallible in winning the championship.
A estratégia do treinador provou ser infalível para ganhar o campeonato.
2. absolutely certain or reliable
There is no infallible method to predict the stock market.
Não há método infalível para prever o mercado de ações.
3. in religious contexts, incapable of error in matters of doctrine or faith (papal infallibility)
The Pope's infallibility on matters of faith is a core Catholic doctrine.
A infalibilidade do Papa em matérias de fé é uma doutrina católica fundamental.
In Brazilian culture, the term 'infalível' is frequently used to describe trusted methods, people, or advice, often with some skepticism or humor given the general understanding that nothing is truly infallible. In religious contexts, particularly among Catholics in Brazil and Portugal, papal infallibility remains a significant theological concept. In American usage, the word often appears in scientific, legal, and philosophical discussions about the limits of human knowledge and certainty.
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