that

UK
/ðæt/
US
/ðæt/
thatdeterminer
UK
/ðæt/
US
/ðæt/
(demonstrative)
Definitions
Used to identify a specific person or thing observed by the speaker.
That book is mine.
Antonyms
thatpronoun
UK
/ðæt/
US
/ðæt/
(demonstrative / relative)
Definitions
Used to refer to something that has already been talked about or seen.
That looks heavy.
Used to introduce a defining (restrictive) relative clause, referring to a person, animal, or thing.
The car that he bought is very expensive.
Used to replace who, whom, or which in a restrictive clause.
She’s the only one that can help us.
Synonyms
thatconjunction
UK
/ðæt/
US
/ðæt/
Definitions
Used to introduce a content clause that completes the meaning of a verb, adjective, or noun expressing thought, feeling, or perception.
I am happy that you could join us today.
Used to introduce a clause expressing a wish, demand, suggestion, or necessity (often with the subjunctive).
It is important that she be there.
Used to introduce a noun clause functioning as the subject of a sentence.
That he survived is a miracle.
Synonyms
so that
thatadverb
UK
/ðæt/
US
/ðæt/
Definitions
To the degree or extent indicated or implied.
I was that tired I couldn't keep my eyes open.