Ardency

So is their ioyes with fearefull passions mixt, Which doth encrease the ardencie of loue, On the forbidden thinges our eyes are fixt;

Source: wiktionary

The Ardency of my Passion made me incapable of uttering more;

Source: wiktionary

[…] the silver flow Of Hero’s tears, the swoon of Imogen, Fair Pastorella in the bandit’s den, Are things to brood on with more ardency Than the death-day of empires.

Source: wiktionary

If there had been in Tom Walsingham’s brain a flame or even a flicker of response to Kit’s poetic ardency or the cunning of his learning, then there would have been other linkings and knottings and the joy of discourse in the cool of after love […]

Source: wiktionary