u - definition and synonyms

noun [countable/uncountable] 

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/juː/
singularu
pluralu’s
singularU
pluralU’s

or U 

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  1. 1
    the 21st letter of the English alphabet. U is a vowel.
     Synonyms and related words
  2. 2

    U

    ungraded: a mark given to a student, showing that a test or piece of work that they have done is extremely bad
See also