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

verb uk phrasal verb with firm   /fɜːm/ us    /fɝːm/
to make a part of your body have less fat and more muscle by doing exercise: Cycling is one of the best ways to firm up your thighs. My stomach has begun to firm up since I started exercising.
(Definition of firm (sth) up phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of firm (sth) up?
Add Cambridge dictionaries to your browser to your website

Translations of “firm (sth) up”

Word of the Day

for starters

used to say that something is the first in a list of things

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More