tri·umph·al·ism \(ˈ)trī¦əm(p)fəˌlizəm also ˈtrīəm-\noun (-s) Etymology:triumphal + -ism : the doctrine, attitude, or belief that one religious creed is superior to all others • tri·um·phal·ist\(ˈ) ̷ ̷ ¦ ̷ ̷ ̷ ̷ ̷ ̷ also ˈ ̷ ̷ ̷ ̷ ̷ ̷ ̷ ̷ \noun or adjective