(as) dull as dishwater

Definition of (as) dull as dishwater

US, informal

  1. :  very boring or dull <The conversation was as dull as dishwater.>

Word by Word Definitions

  1. :  mentally slow :  stupid

    :  slow in perception or sensibility :  insensible

    :  lacking zest (see zest 2) or vivacity :  listless

  1. :  to make dull

    :  to become dull

  1. :  water in which dishes have been or are to be washed

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