Unfairly discriminatory against one sex in favour of the other; in particular, treating women less favourably than men
{i} one who holds stereotypical beliefs about gender roles; one who discriminates based on gender (especially against women)
discriminatory on the basis of sex (usually said of men's attitude toward women)
disapproval If you describe people or their behaviour as sexist, you mean that they are influenced by the belief that the members of one sex, usually women, are less intelligent or less capable than those of the other sex and need not be treated equally. Old-fashioned sexist attitudes are still common A sexist is someone with sexist views or behaviour. someone who believes that one sex is weaker, less intelligent, or less important than the other, and treats them unfairly because of this - used to show disapproval
{s} promoting stereotypical beliefs about gender roles; promoting gender-based discrimination (especially against women)