thickheaded; insensitive; dull; thick-skinned
stupidity; silliness; asininity; imbecility; dim-wittedness
thickheaded; slow-witted; phlegmatic; slow (of one's movements); sluggish
becoming dull; slowing down
slow; clumsy; stupid; irritating
slow; clumsy; stupid; irritating
ordinary train; slow train
stupidity; dull person; dullness
sharp or blunt; bright or foolish
obtuse (of the shape of a leaf); rounded
luck, steadfastness and patience (the three keys to achieving success)