An absolute no is a core issue or belief that you are not willing to compromise on, like fidelity, monogamy, religious beliefs or sense of humour. Whatever is important for you to the point that you wont tolerate it, is an absolute no for you in relationships.

What are your no nos?

-nos, -nos. Informal. anything that is forbidden or not advisable, as because of being improper or unsafe. [1940–45]

What is the biggest deal breaker in a relationship?

Some common deal-breakers include a partners stance on having children, a lack of responsibility with money, or a lack of ambition. We asked dating and relationship exerts to name some of the biggest deal-breakers people cite for breaking off a relationship. Visit Insiders homepage for more stories.