eu ‧ pho ‧ ri ‧ a /juːˈfɔːriə $ jʊ-/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: Greek ; Origin: euphoros 'healthy' ]
an extremely strong feeling of happiness and excitement which usually only lasts for a short time:
There was a general atmosphere of pessimism after the euphoria of last year.