celeridade
1. swiftness or speed of movement or action
The firefighters responded with great celerity to the emergency call.
Os bombeiros responderam com grande celeridade à chamada de emergência.
2. quickness and liveliness in manner or speech
She spoke with such celerity that it was hard to follow her argument.
Ela falava com tanta celeridade que era difícil acompanhar seu argumento.
Celerity is a formal, somewhat literary term more commonly used in legal, medical, and business contexts in both English-speaking and Portuguese-speaking countries. In everyday Brazilian Portuguese, 'rapidez' or 'velocidade' are more colloquial alternatives. The word appears frequently in legal documents emphasizing the need for prompt action or response.
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