Antonyms for the word "half-wittedness" can be categorized as intelligence, astuteness, cleverness, shrewdness, brilliance, or wit. These antonyms signify a sharp mind, sagacity, quick-wittedness, and sound judgment. A person with these attributes demonstrates a quick perception and understanding of complex concepts and can think critically in various situations. They are known for their resourcefulness, practicality, and the ability to adapt to change. In contrast to half-wittedness, these antonyms illustrate an individual with great intellectual capacity, formidable knowledge, and the potential for greatness. In short, half-wittedness and these antonyms are complete opposites, and it's crucial to possess as many of these antonyms as possible if one seeks personal and professional success.