(as) dull as ditchwater

idiom

Definition of (as) dull as ditchwater

British, informal
: very boring
  • The book is as dull as ditchwater.

Word by Word Definitions

dull play
  1. : tedious, uninteresting

  2. : lacking sharpness of edge or point

  3. : not resonant or ringing

  1. : to make dull

  2. : to become dull


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