Part of speech:
Unaware or uninformed:
Not intensely or keenly felt:
Opaque, with good contrast between light and dark areas. Used of a photographic negative.
The definition of dumb is unable to speak or someone or something that appears stupid.
Slow to understand or perceive; dull or insensitive
Alternative form of thickwitted.
The definition of thick is great depth or dense.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Lacking in intelligence
(used informally) stupid
Find another word for thickheaded. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for thickheaded, like: stupid, ignorant, idiotic, dull, blockheaded, boneheaded, dense, dumb, doltish, hebetudinous and obtuse.