hilarious
词根词缀：
词根
hilar= glad 高兴
exhilarate v. 使高兴
ex 出 + hilar 高兴 + ate 使… → 使高兴
hilarious adj. 高兴的
hilar 高兴 + ious …的 → 高兴的
hilarity n. 高兴
hilar 高兴 + ity 具备某种性质，状况 → 高兴
数据来源：新东方英语词汇速记大全
相关例句：
It's hilarious watching him try to flirt with women half his age.
瞧他想和比自己年少一半的女子调情，真是可笑之至。
That really sounds hilarious.
那听起来确实好笑极了。
He had a fund of hilarious tales on the subject.
关于这个话题他有说不完的趣事。
CORINNE: I just saw "Something About Mary" last night. It was hilarious.
哥琳娜：我昨晚看了《哈拉玛莉》，实在太好笑了。
That movie was hilarious! I haven't laughed that hard for a long time.
那部电影真搞笑。我好久没有笑得这么厉害了。
I launched into a hilarious account of my Arctic adventures.
我开始叙述我那令人捧腹的北极历险记。