The Middle Ages are so over
arrogate to yourself: claim
abrogate all responsibility: deny, devolve
battle, combat: fight
high and mighty (1548 HALL Chron., Edw. IV 229 Right high and mightie prince, right puyssaunt and noble kyng.)
Iran is sabre-rattling over its nuclear ambitions.
sate (an appetite): satisfy
save, save for, save only for: apart from
scud (clouds across the sky)
scuffle (and other words for fight like fray, spat, do battle, fracas, skirmish)
tantamount to (means “such amount”. paramount = top amount. Norman French): equivalent to
teeter on the brink
to boot: as well
wrath (incur the wrath of X): anger
Archaic pairs here.
More archaisms here. And yet more archaisms here.