happily — OET

happily

adverb

1 the children played happily on the sand for hours:

contentedly, merrily, delightedly, joyfully, gaily, cheerfully, cheerily, agreeably, blithely, light-heartedly, gleefully, blissfully, with pleasure, to one's heart's content;

literary joyously.

▷antonyms miserably.

2 I will happily leave my car behind:

willingly, gladly, readily, freely, cheerfully, ungrudgingly, unhesitatingly, with pleasure, with all one's heart and soul;

archaic lief, fain.

▷antonyms unwillingly.

3 happily, we are living in enlightened times:

fortunately, luckily, thankfully, mercifully, opportunely, providentially, felicitously, by chance, by good luck, by good fortune, as luck would have it;

thank goodness, thank God, thank heavens, thank the stars.

▷antonyms unfortunately.

happily Oxford Dictionary of English