The meaning of THICK is having or being of relatively great depth or extent from one surface to its opposite. How to use thick in a sentence.

thick adjective [-er/-est only] (CLOSE TOGETHER) (of particular things) close together with little space between them: a thick fog

1. The thickest part. 2. The most active or intense part: in the thick of the fighting.

If something that consists of several things is thick, it has a large number of them very close together. She inherited our father's thick, wavy hair. They walked through thick forest.

(of a solid having three general dimensions) measured across its smallest dimension: a board one inch thick. composed of or containing objects, particles, etc., close together;

Jan 20, 2026 · A thick theory, such as libertarianism or socialism, is not appropriate as the basis for a constitution in a pluralistic society in which the people hold differing views about the good (or justice).

Adjective: thick (thicker,thickest) thik Not thin; of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions

In a close, compact state or arrangement; densely. Dozens of braids hung thick from the back of her head.

When something's thick, it's wide from one side to the other, like a thick piece of French toast or a thick layer of snow on your car. Thick things are broad or bulky or decidedly not thin — think of the thick …

THICK definition: having relatively great extent from one surface or side to the opposite; not thin. See examples of thick used in a sentence.