blissful
adjective uk/ˈblɪs.fəl/ us/ˈblɪs.fəl/
极乐的;极幸福的
extremely or completely happy
a blissful childhood/holiday 快乐的童年／假日
We spent a blissful year together before things started to go wrong. 我们在一起度过了非常幸福的一年，然后问题便开始出现了。
Idiom
in blissful ignoranceidiom （对令人不快的事）一无所知
not knowing any of the unpleasant facts about something
All the time his business was failing, he kept his wife and family in blissful ignorance. 他的生意一直不景气，但他一直瞒着妻子和家人，不想让他们担心。