"Beef-witted" is a derogatory term used to describe someone who is perceived as slow-witted or stupid. If you are looking for synonyms for this term, you can consider words like dim-witted, moronic, foolish, dense, obtuse, and dullard. These words all convey the same idea that someone is not particularly sharp mentally. Other possible synonyms for "beef-witted" include slow, sluggish, and lacking in intelligence, although these words may be less specifically insulting than the term "beef-witted". It is important to remember not to use derogatory terms or insults when speaking to others or about them, as it can be hurtful and damaging.