Having no stomach for something means to lack the courage, determination, or enthusiasm to do a particular task. It is an idiomatic expression that indicates an unwillingness to engage in an activity. Antonyms for having no stomach for could be "determined," "willing," "resolute," "eager," "fearless," "undaunted," "courageous," "valiant," "bold," or "brave." These words convey a sense of strength, bravery, and determination to overcome obstacles and achieve goals. By using these antonyms, we can focus on positive attributes and encourage ourselves and others to face challenges with courage and resolve.