fervid
词根词缀：
defervesce v. 退烧
de 去掉 + ferv 沸腾；发热 + esce 表动作开始或正在进行 → 去热 → 退烧
effervesce v. 沸腾；冒泡
ef 出 + ferv 沸腾；发热 + esce 动作开始或正在进行 → 冒热气 → 沸腾
fervent adj. 热切的
ferv 沸腾；发热 + ent 具有…性质的 → 热切的
fervid adj. 热情的，热烈的
ferv 沸腾；发热 + id 有…性质的 → 热情的，热烈的
fervor n. 热烈，热情
ferv 沸腾；发热 + or 表状态 → 热烈，热情
perfervid adj. 十分热情的
per 自始至终 + fervid 热情的，热烈的 → 十分热情的
数据来源：新东方英语词汇速记大全
相关例句：
In Hong Kong they are mining it with shipping container-sized, liquid-cooled rooms of computer circuitry. In Wenzhou, the Silicon Valley of Chinese shadow banking, it was an object of fervid speculation.
在香港，人们用来挖掘它的计算机电路室，已经和船运集装箱一般大小，还配备着液体冷却装置；在中国影子银行体系的硅谷&温州，它是人们狂热投机的对象。
But their persecution has suddenly turned fervid.
现在对他们的迫害突然变本加厉了起来。
It was about this time that the newspapers and magazines were beginning to pay that illustrative attention to the beauties of the stage which has since become fervid.
差不多也就在这个时候，报纸和杂志开始将舞台上的美人的照片用作插图，而且此后这种作法形成了热潮。
But the fervid facility of his impromptus could not be so accounted for.
但是，如此解释他那高超的即兴演奏的技巧就不行了。
Pass by the fervid flowers that press themselves on your sight.
穿过扑来眼底的热情的繁花，不去管她们的殷勤。
Intensely zealous or fervid.
强烈的热心或者热情。