• -st

    Origin 1

    Full definition of -st

    Suffix

    1. (archaic) Verb suffix for the second-person singular
      • MacbethThou com'st to use thy tongue.

    Origin 2

    Suffix

    1. Marks ordinals written in digits when the final term of the spelled number is "first"the 21st century

    Coordinate terms

    Origin 3

    -s + -t of excrescent suffixes, with -s sometimes genitive.

    Suffix

    1. Excrescent suffix (adding sound but largely not changing the meaning).

    Usage notes

    When there is a shorter synonymous word (as in amongst/among), the form with -st is generally considered more formal, old-fashioned, affected, or British. However, against is distinct from again, and midst is used in some context distinctly from mid.

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