ebullience
noun/ɪˈbʌliəns/, /ɪˈbʊliəns/
/ɪˈbʌliəns/, /ɪˈbʊliəns/
[uncountable] (formal)- the quality of being full of confidence, energy and good humour
- I put her remarks down to youthful ebullience.
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ebullience