Having it over is a phrase that refers to the feeling of completing a task or achieving a victory. The antonyms for having it over can be failing, losing, or giving up. Failing means not succeeding in a task or goal. Losing means being defeated by another person, team, or obstacle. Giving up means choosing not to continue with a task or goal. Some synonyms of having it over are completing, accomplishing, achieving, triumphing, and succeeding. It is important to remember that success and failure are just part of life, and we can always learn from our experiences to improve ourselves.