As thick as thieves and Thick

Thick and as thick as thieves are semantically related In some cases you can use "Thick" instead an adjective phrase "As thick as thieves".

Thick adjective - Having or being of relatively great depth or extent from one surface to its opposite.

As thick as thieves and thick are semantically related in pally topic. You can use "As thick as thieves" instead an adjective "Thick". informal substitute

Nearby Words: thicken, thickness, thickened, thicket, thickhead