Meaning of the word "firm up" in English

What does "firm up" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

firm up

US /fɜːrm ʌp/

UK /fɜːrm ʌp/

to make something more definite or certain

Example:

•

We need to firm up the details of the contract.

•

Can you firm up your plans for the weekend?

Synonym:

finalize confirm settle establish secure

to make something physically stronger or more solid

Example:

•

The concrete needs time to firm up before we can build on it.

•

The jelly will firm up in the refrigerator.

Synonym:

harden solidify strengthen stiffen thicken

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