fourth

adjective

  1. 1

    coming next after the third and just before the fifth in position or time or degree or magnitude

    the quaternary period of geologic time extends from the end of the tertiary period to the present

adverb

  1. 1

    in the fourth place

    fourthly, you must pay the rent on the first of the month

noun

  1. 1

    the musical interval between one note and another four notes away from it

  2. 2

    one of four equal parts

    a quarter of a pound

  3. 3

    following the third position; number four in a countable series

Synonyms

Also useful for “fourth”:Unscrambler