Numskulled is an adjective that refers to someone who lacks intelligence or common sense. Antonyms for numskulled include intelligent, clever, bright, and astute. These are qualities that denote a high level of mental acuity, quick-wittedness, and sound judgment. A person who is intelligent is capable of grasping complex concepts easily and is well-read. In contrast, a numbskull may have difficulty understanding even the most basic ideas. A clever person is skillful at devising creative and effective solutions to problems, while a bright person possesses a high level of mental capacity. Finally, an astute person possesses keen insights and a sharp sense of judgment, allowing them to navigate complex situations with ease.