Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “that”


conjunction   strong /ðæt/   weak /ðət/
A2 used after some verbs, nouns, and adjectives to start a new part of a sentence: He said that he’d collect it later.
B1 used instead of ‘who’ or ‘which’ in the middle of a sentence: Have you eaten all the cake that I made yesterday?
(Definition of that conjunction from the Cambridge Essential Dictionary © Cambridge University Press)

Definitions of “that” in other dictionaries

Word of the Day


the skill with which something was made or done

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