- 's
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's1
an ending used in writing to represent the possessive morpheme after most singular nouns, some plural nouns, esp. those not ending in a letter or combination of letters representing an s or z sound, noun phrases, and noun substitutes, as in man's, women's, baby's, James's, witness's, (or witness'), king of England's, or anyone's.[ME -es, OE]'s21. contraction of is: She's here.'s3 's4 's5a contraction of as, as in so's to get there on time.
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Universalium. 2010.