sadistic

This term describes a specific psychological drive where the infliction of pain is not merely a means to an end, but the primary source of gratification. It carries a heavy negative connotation, often associated with pathology, tyranny, or extreme cruelty. In casual conversation, the word is frequently used hyperbolically to describe someone who is overly strict or enjoys minor inconveniences of others, though its primary definition remains rooted in severe psychological or physical abuse.