Shallow-pated is an adjective to describe someone who is lacking intelligence or understanding. There are many other words that can be used to describe this characteristic. For instance, the words simple-minded, bird-brained, and dim-witted are perfect synonyms for shallow-pated. Other synonyms for shallow-pated include foolish, mindless, and obtuse. These words can be used interchangeably to describe someone who is lacking in mental agility or sophistication. While shallow-pated might be a less-commonly used term, there is always an abundance of synonyms available to enhance your vocabulary and to more accurately describe the characteristics of an individual who may be lacking in intelligence.