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Rule "their's (theirs)"

This is one of many errors that LanguageTool can detect.

Description: their's (theirs)
Message: The possessive pronoun <suggestion>\1s</suggestion> is spelled without an apostrophe.
Category: Grammar (ID: GRAMMAR)
Incorrect sentences
that this rule can detect:
  • The tool belongs to them, it is their's.
    Correction suggestion: theirs
  • Thanks for your’s and Lucy’s help.
    Correction suggestion: yours
Correct sentences
for comparison:
  • HER's new album is coming out in August.
ID: THEIR_S [2]
Version: 6.8-SNAPSHOT (2025-10-28 22:33:08 +0100)