Synonyms of the word

loggerheaded

• adj. dull; stupid.

blockheaded

• adj. Resembling a blockhead; stupid.

boneheaded

• adj. (slang) like a bonehead.
• adj. (slang) like something a bonehead would do.

fatheaded

• adj. Characteristic of a fathead; stupid.

stupid

• adj. Lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.
• adj. To the point of stupor.
• adj. (archaic) Characterized by or in a state of stupor; paralysed.
• adj. (archaic) Lacking sensation; inanimate; destitute of consciousness; insensate.
• adj. (slang) Amazing.
• adj. (slang) damn, annoying, darn.
• adv. (slang, dated) Extremely.
• n. A stupid person; a fool.
• n. (colloquial, uncountable) The state or condition of being stupid.

thick

• adj. Relatively great in extent from one surface to the opposite in its smallest solid dimension.
• adj. Measuring a certain number of units in this dimension.
• adj. Heavy in build; thickset.
• adj. Densely crowded or packed.
• adj. Having a viscous consistency.
• adj. Abounding in number.
• adj. Impenetrable to sight.
• adj. Difficult to understand, or poorly articulated.
• adj. (informal) Stupid.
• adj. (informal) Friendly or intimate.
• adj. Deep, intense, or profound.
• adj. (Britain, dated) troublesome; unreasonable.
• adj. (slang, chiefly of women) Curvy and voluptuous, and especially having large hips.
• adv. In a thick manner.
• adv. Thickly.
• adv. Frequently; in great numbers.
• n. The thickest, or most active or intense, part of something.
• n. A thicket.
• n. (slang) A stupid person; a fool.
• v. (archaic, transitive) To thicken.

thick-skulled

• adj. Dull; heavy; stupid; slow to learn.

thickheaded

• adj. (informal) stupid, obtuse or dumb.