plumb the depths (of something) - definition and synonyms

  1. 1
    to have or feel a negative quality or emotion very strongly

    He’s really plumbed the depths of depression since their breakup.

  2. 2
    to be a very extreme example of something bad
    plumb new depths (=be even worse than usual):

    England plumbed new depths on Saturday when they lost 4–0.

See also main entry: plumb