The term "war hater" is often used to refer to people who are against war and believe that it should be avoided at all costs. However, there are several synonyms for this term that can be used to describe individuals who hold such beliefs. Some of these synonyms include pacifist, antiwar advocate, dove, peacenik, and conscientious objector. These terms all convey the idea that the individual in question opposes war and is committed to finding peaceful solutions to conflicts. While each of these terms may have slightly different connotations and implications, they all reflect a deeply held belief in the value of peace and the avoidance of violence.