Here's what rhymes with vegetarianism.

Consider these alternatives

pacifism / given vegetarians / variance environmentalism / given vegetarian / agrarian nonviolence / violence espousing / housing ascetic / magnetic teetotalism / given spiritualism / spiritualisme vitalism / given feminism / given universalism / given promiscuity / continuity espouse / allows atheism / horizon anarchism / given espouses / arouses relativism / given unitarianism / given activism / given protestantism / given existentialism / given utilitarianism / given libertarianism / given