To zupełnie normalne zdanie w pewnych kontekstach pasujące nawet lepiej niż "być złym". Na przykład jak lepiej brzmiałoby pytanie Lorda Sithów zadane swojemu uczniowi? „Czujesz złość” czy „jesteś zły”?
Bardzo realny kontekst. Indeed! ☺ Dla mnie to dziwna konstrukcja, ale sprawdziłem, Polacy tak faktycznie mówią, chociaż nigdy nie słyszałem. ☺
Very similar, but it changes the noun to an adjective. "Nie czuję się już wściekły".
My main concern is how idiomatic English relates to idiomatic Polish here. A frequency search on the web shows, in English, that forms of "to feel anger" are much less frequent than forms of "to feel angry". This matches my intuition that "to feel anger" draws attention to anger as an entity (and for that reason sounds more literary/philosophical when not immediately qualified in some way), whereas the more common "to feel angry" focuses on communicating a person's emotional state. Polish seems to exhibit the reverse trend in a frequency search, which suggests that the "right" translation of the idea should use a different grammatical structure.
"mad" is a colloquialism for "angry," because its literal meaning is "insane" or "crazy." "Angry" comes from the noun "anger," but "mad" comes from "madness"?!? But since this course is for English-speakers, the Polish is what matters, not the English
What about "I don't feel anger yet."? Już can also mean "yet", right?
Even after seeing the correct answer I hear a very clear "Nie tuję już złości", at both speeds.
Don't forget that I usually hear the female voice - any way you can hear it too?
"I no longer feel (any) anger" is fine, but I find the use of "do" very strange here.
It is true that we can add "do" to an affirmative sentence to make it more emphatic, eg. "But I do love you", but we don't usually do it with a negative sentence.
There are a few examples of "do no longer live" (19) on the web, but they far outnumbered by those without "do" (188 checked). It could of course be a regionalism or dialect thing I don't know about. But it hardly registers at Ngram's collection of books.