Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
A major source of culture shock involved the Fremen spitting on the ground when meeting people, which Duke Leto Atreides took as an insult.
Source: https://www.cbr.com/how-futurama-season-11-parodied-dune/