firm up

US /fɜːrm ʌp/
UK /fɜːrm ʌp/
"firm up" picture
1.

firmar, confirmar

to make something more definite or certain

:
We need to firm up the details of the contract.
Precisamos firmar os detalhes do contrato.
Can you firm up your plans for the weekend?
Você pode firmar seus planos para o fim de semana?
2.

endurecer, firmar

to make something physically stronger or more solid

:
The concrete needs time to firm up before we can build on it.
O concreto precisa de tempo para endurecer antes que possamos construir sobre ele.
The jelly will firm up in the refrigerator.
A gelatina vai firmar na geladeira.