开怀大笑 kāihuáidàxiào to laugh heartily Origin Definitions Defs Strokes Stroke Words Sentences Sents 开怀 開懷 kāihuái verb to one's heart's content to one's heart's content; without restraint; being happy and care-free in mood大笑 dàxiào verbnoun to laugh out loud to laugh heartily; to laugh loudly or to have a belly laugh