Iniquitous/ɪˈnɪkwɪtəs/ Definition 1 of 1Pro Tip 1/3Negative Connotation The word often implies that someone is knowingly acting unfairly or wickedly. The CEO's iniquitous decision exploited the workers. Pro Tip 2/3Strong Disapproval Use it to express strong moral judgement, usually against actions or systems. The iniquitous laws were eventually abolished due to public outcry. Pro Tip 3/3Not Casual It's a serious word, not often used in casual conversation or light topics. Their iniquitous practices demand a serious response, not just a chat.