allegro animato and deciso in Mazeppa

Question

In Liszt's 5e étude, Mazeppa, a part has allegro animato and then the next one allegro deciso.

What are the possibilities and the most likely meaning of those terms ?

I understand that animato can mean more and more animated or accelerando over the whole part, it is a global accelerando, with possibilities of variations inside (eg., like a rubato inside the accelerando)

I understand that deciso can mean decided, so there should not be hesitation, even though there could be simple deviations inside the part; it also can mean that allegro deciso is also a rather fast allegro, with feelings of being unstoppable, absence of doubt, or in other terms, no ritardendi inside.

Answer 1

To my understanding, animato doesn't mean a progressive change over time, but just means "animated" or "lively." (Animando, as a progressive verb, might have the "getting faster" sense you're thinking of.)* Meanwhile deciso (maybe a good English translation is "decisive") might simply color the dramatic interpretation more than anything explicit about tempo; for me, it often means more pronounced articulation.

* If your primary language is French, this could be challenging; as I understand it, this tense is absent in French. So Italian animato is equivalent to French animé, but animando is plus et plus animé.