IPA: /ðɛrz/
KK: /ðɛrz/
A word used to indicate that something belongs to them, referring to a group of people or things.
The books on the table are theirs.
The word 'theirs' originates from Old English 'þeira', which is a possessive pronoun meaning 'of them'. It indicates ownership or belonging to a group of people.
Think of 'theirs' as meaning something that belongs 'to them' — it shows possession by a group.