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.
As the person is moving backwards while everything else goes forwards, the world is disorienting and dangerous, the air is unbreathable, and the heat transfer of fire and ice are inverted, among other details.
Source: https://screenrant.com/time-travel-movies-science-fiction-make-sense/