You use bitterly when you are describing an attitude which involves strong, unpleasant emotions such as anger or dislike.
例句
We are bitterly upset at what has happened.发生的事情让我们极为心烦。...Lucy Gannon's fine, bitterly funny play.露西·甘农令人捧腹又倍感心酸的优秀剧本
英汉词典释义
adv.
苦涩地;痛苦地;不痛快地
He spoke most bitterly of his experiences in prison.他非常痛苦地讲述了他在监狱中的经历。He realized how he had been fooled, and laughed bitterly.他明白了自己是怎么被愚弄的,苦笑起来。
残酷地;激烈地;非常地
It is bitterly cold today.今天冷得很。A bitterly cold winter damaged industrial output and trade.严寒的冬天损害了工业生产和贸易。Regional monopolies were bitterly fought for.为夺取地方垄断权发生了激烈的竞争。He was ashamed and bitterly humiliated.他感到羞耻,丢尽了面子。