thick as thieves

Definition of thick as thieves

  1. :  very close and secretive They were (as) thick as thieves for weeks, which made us wonder what they were doing.

Word by Word Definitions

thickplay
  1. :  having or being of relatively great depth or extent from one surface to its opposite

    :  heavily built :  thickset

    :  close-packed with units or individuals

  1. :  in a thick manner :  thickly

  1. :  the most crowded or active part

    :  the part of greatest thickness

thiefplay thieves
  1. :  one that steals especially stealthily or secretly

    :  one who commits theft or larceny


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