alt Hacker News> eschatology
From Wikipedia
Eschatology (/ˌɛskəˈtɒlədʒi/; from Ancient Greek ἔσχατος (éskhatos) 'last' and -logy) concerns expectations of the end of present age, human history, or the world itself.
I'm case anyone else is vocabulary skill checked like me
wiktionary is better for this usecase since it tends to have a richer coverage of various meanings