outrance

/uːˈtrɑːns/
noun
  1. The utmost extremity or the highest degree of something, especially in violence, passion, or conflict.
    • In the final battle, the warriors fought with outrance, showing no mercy.
    • Her dedication to the project was outrance; she worked day and night without rest.
    • The debate escalated to outrance, with both sides shouting personal insults.
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