Definition of "thick" in English

adjective

1. Relatively great in extent from one surface to the opposite in its smallest solid dimension.

2. Measuring a certain number of units in this dimension.

   • I want some planks that are two inches thick.

3. Heavy in build; thickset.

   • He had such a thick neck that he had to turn his body to look to the side.

4. Densely crowded or packed.

   • We walked through thick undergrowth.

5. Having a viscous consistency.

   • My mum’s gravy was thick but at least it moved about.

6. Abounding in number.

   • The room was thick with reporters.
   • Seashells lay thick on the beach.

7. Impenetrable to sight.

   • We drove through thick fog.

8. (Of an accent) Prominent, strong.

9. (informal) Stupid.

   • He was as thick as two short planks.

10. (informal) Friendly or intimate.

    • They were as thick as thieves.

11. Deep, intense, or profound.

    • Thick darkness.

12. (academic) Detailed and expansive; substantive.

13. (UK, dated) Troublesome; unreasonable.

14. (slang, chiefly of women) Curvy and voluptuous, and especially having large hips.

adverb

1. In a thick manner.

   • Snow lay thick on the ground.

2. Frequently or numerously.

   • The arrows flew thick and fast around us.

noun

1. The thickest, or most active or intense, part of something.

   • It was mayhem in the thick of battle.

2. A thicket.

3. (slang) A stupid person; a fool.

verb

1. (archaic, ambitransitive) To thicken.

determiner

1. Alternative form of thilk (“that same”).