• One's

    Pronunciation

    • US IPA: /wÊŒns/, /wÊŒnz/
    • one and once are pronounced differently from the related words alone, only and atone. Stressed vowels often become diphthongs over time (Latin bona → Italian buona and Spanish buena), and this happened in the to the words one and once, first recorded ca 1400: the vowel underwent some changes, from ōn → ōōōn → wōn → wōōn → wŏŏn → wÅ­n.

    Origin

    one + -'s.

    Full definition of one's

    Pronoun

    one's

    -('s/">
    1. Belonging to one.

    Usage notes

    Unlike all other possessive pronouns (yours, hers, theirs) one’s is spelled with an apostrophe.

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