IPA: /ˈbɑːrbərəs/
KK: /ˈbɑːrbərəs/
Describing something that is very cruel, savage, or lacking in culture and refinement.
The barbarous acts committed during the war shocked the entire world.
Barbarous → It is formed from "barbarus" (from Latin, meaning foreign or strange) and the suffix "-ous" (meaning full of or characterized by). The word "barbarous" describes something that is full of barbarism or characterized by a lack of civilization.
Think of something that is 'full of' ('-ous') 'foreignness' or strangeness ('barbarus') — that's why barbarous means uncivilized or savage.