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to firm up
[phrase form: firm]
01
to make a plan, agreement, or decision more definite or secure
Grammatical Information
Composition
phrasal
action verb
regular
separable
particle
up
base verb
firm
present tense
firm up
3rd person singular
firms up
present participle
firming up
past simple
firmed up
past participle
firmed up
Examples
The team needs to firm up the details of the project before the presentation.
02
to make a soft or unstable substance become more solid or stable
Examples
The custard will firm up as it cools.
