Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

sit up

(STRAIGHTEN) phrasal verb with sit
 
 /sɪt/ verb

Definition

to straighten your body or move into a sitting position: She was finally strong enough to sit up in bed.
(Definition of sit up (STRAIGHTEN) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of sit up

“sit up” in other dictionaries

Word of the Day

demur

to express disagreement or refuse to do something

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