adjective
Relatively great in extent from one surface to the opposite in its smallest solid dimension.
Measuring a certain number of units in this dimension.
Heavy in build; thickset.
Densely crowded or packed.
Having a viscous consistency.
Abounding in number.
Impenetrable to sight.
(Of an accent) Prominent, strong.
(informal) Stupid.
(informal) Friendly or intimate.
Deep, intense, or profound.
(academic) Detailed and expansive; substantive.
(UK, dated) Troublesome; unreasonable.
(slang, chiefly of women) Curvy and voluptuous, and especially having large hips.
adverb
In a thick manner.
Frequently or numerously.
noun
The thickest, or most active or intense, part of something.
A thicket.
(slang) A stupid person; a fool.
verb
(archaic, ambitransitive) To thicken.
determiner
Alternative form of thilk (“that same”).