Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “flat”


adverb     /flæt/ (flatter, flattest)
B2 in a horizontal or level position on a surface : She spread the cloth flat across the kitchen table .Straight, even and level
flat out using all your energy or effort : We've all been working flat out to finish the project on time .Energetic and livelyEffort and expending energyTrying and making an effort
in 5 minutes/30 seconds, etc flat in exactly and only 5 minutes , 30 seconds , etc : He showered and got dressed in 10 minutes flat.Accurate and exact
(Definition of flat adverb from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “flat” in other dictionaries

Word of the Day


a situation in which two people are friends

Word of the Day


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