Where does “austero” come from?

austero (Latin) comes from Latin austerus, from Ancient Greek αὐστηρός, from Proto-Indo-European h₂sews- — to be dry.

austero (Latin): dative masculine singular of austērus; dative...

Definitions

Step	Language	Word	Meaning
1	Latin	austerus	austere, plain; harsh, bitter, sour; sharp,...
2	Ancient Greek	αὐστηρός	bitter, harsh
3	Proto-Indo-European	h₂sews-	to be dry