Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “firm sth up”

firm sth up

phrasal verb with firm     /fɜːm/ US  /fɝːm/ verb
to make something more certain or less likely to change: Could we have a meeting so we can firm up the details of our agreement?Planning, expecting and arrangingPlotting and trapping
(Definition of firm sth up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of firm sth up

Translations of “firm sth up”

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More