Betraying Bile is a term used to describe a person who expresses their anger or resentment in a hostile and aggressive manner. It is often used to describe someone who is spiteful and vindictive, and who may be willing to hurt or harm others in order to get revenge. The crossword solution for Betraying Bile is 'irately', which means with great anger or rage. This term is often used to describe someone who is lashing out in a hostile way, and who is not afraid to express their feelings of betrayal and bitterness.