firm up
phrasal verbfirm up
- to become harder or more solid
- Put the mixture somewhere cool to firm up.
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
firm something up
- to make arrangements more final and fixed
- The company has not yet firmed up its plans for expansion.
- The precise details still have to be firmed up.
- to make something harder or more solid
- A few weeks of regular exercise will firm up a flabby stomach.