From Longman Dictionary of Contemporary Englishtriumphalismtri‧um‧phal‧is‧m /traɪˈʌmfəlɪzəm/ noun [uncountable] PROUDbehaviour which shows that someone is too proud of their success and too pleased about the defeat of their opponents – used to show disapproval charges of triumphalism
Examples from the Corpus
triumphalism• Thank you for questioning the continuation of this anti-communist triumphalism.• By contrast to the Corinthian triumphalism, the apostles clearly live within the limits of the Present Evil Age.• We must also divert money from the expensive irrelevancies of poster campaigns and media triumphalism towards full-time agencies and local party-building.• From the leadership, the word quickly went out: bad news is not good news, no triumphalism.• This is not a claim of triumphalism. 