Where does “moratorium” come from?

moratorium (Latin) comes from Latin moror, from Ancient Greek μωρός, from Proto-Indo-European muHrós — dull, stupid.

Ancestry of “moratorium”, step by step

Step	Language	Word	Meaning
1	Latin	moror	I linger, loiter; I delay, hinder; I am a fool
2	Ancient Greek	μωρός	slow, sluggish; slow, dull, foolish, stupid;...
3	Proto-Indo-European	muHrós	dull, stupid