1. to reduce or diminish confidence, certainty, or reliability in something or someone
The scandal will weaken assurance in the government's ability to manage the economy.
O escândalo enfraquecerá a segurança na capacidade do governo de gerir a economia.
2. to undermine trust or conviction in a particular matter
Multiple failures weaken assurance among investors.
Múltiplas falhas enfraquecem a confiança entre os investidores.