incompatibility

/ˌɪnkəmˌpætəˈbɪləti/
noun
  1. The state of two or more things being unable to exist or work together without problems.
    • The incompatibility between the two software programs caused frequent crashes.
    • Blood type incompatibility can cause serious health issues during a transfusion.
    • Their relationship ended because of a fundamental incompatibility in their life goals.
  2. A lack of harmony or agreement between people, especially in a relationship.
    • Personality incompatibility is a common reason for team conflicts at work.
    • The couple's incompatibility became obvious after just a few months of living together.
    • They tried counseling, but their incompatibility was too deep to overcome.