Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

dull

 
/dʌl/ v [T]

Definition

to make something less sharp or clear: Lack of sleep will dull your reflexes.
(Definition of dull v from the Cambridge Academic Content Dictionary © Cambridge University Press)

“dull” in other dictionaries

Word of the Day

everything under the sun

everything that exists or is possible

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