adjective \thər, ˈther\

: relating to or belonging to certain people, animals, or things : made or done by certain people, animals, or things

: his or her : his : her : its

Full Definition of THEIR

:  of or relating to them or themselves especially as possessors, agents, or objects of an action <their furniture> <their verses> <their being seen>
:  his or her :  his, her, its —used with an indefinite third person singular antecedent <anyone in their senses — W. H. Auden>
See Usage Discussion at they

Examples of THEIR

  1. All the furniture in their house is brand-new.
  2. They are on friendly terms with their neighbors.
  3. The students are seeking to exercise their rights.
  4. The birds have left their nest.
  5. The trees have all shed their leaves.
  6. Their artwork is on display at the museum.
  7. He was angry because of their arriving late.

Origin of THEIR

Middle English, from their, pron., from Old Norse theirra, genitive plural demonstrative & personal pron.; akin to Old English thæt that
First Known Use: 13th century


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