Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “earth”

earth

noun   /ɜːθ/
B1 (also the Earth) the planet that we live on
[no plural] soil or ground: a pile of earth
how, what, why, etc. on earth informal used when you are extremely surprised, confused, or angry about something: How on earth did this happen? Why on earth didn’t you tell me before?
(Definition of earth noun from the Cambridge Essential Dictionary © Cambridge University Press)

Definitions of “earth” in other dictionaries

Word of the Day

closeness

the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

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