Also spelled their’n
pron
Freq #5451
Meanings
-
1
pron
The one or ones belonging to them; used without a noun after it.
This luggage is theirs, not ours.
Etymology
From Middle English theires, attested since the 1300s. Equivalent to their + -s (compare -'s); formed by analogy to his. Displaced theirn (from Middle English theiren, formed by analogy to mine, thine) in standard speech.
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