noun Date: 1964 an attitude or feeling of victory or superiority: as, the attitude that one religious creed is superior to all others, smug or boastful pride in the success or dominance of one's nation or ideology over others, triumphalist noun or adjective
TRIUMPHALISM
Meaning of TRIUMPHALISM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012