hap ‧ pi ‧ ly /ˈhæpəli, ˈhæpɪli/ BrE AmE adverb
[ Word Family: noun : ↑ happiness ≠ ↑ unhappiness ; adverb : ↑ happily ≠ ↑ unhappily ; adjective : ↑ happy ≠ ↑ unhappy ]
1 . in a happy way:
Michelle smiled happily.
I’m a happily married man.
So she married the prince, and they lived happily ever after (=used at the end of children’s stories to say that someone was happy for the rest of their life) .
2 . [sentence adverb] fortunately:
Happily, his injuries were not serious.
3 . very willingly:
I’d happily go for you.
Most restaurants will happily accept payment by cheque.