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.
What's disturbing is that there's a good chance he would have used it by now if it hadn't been locked away within the now-lost Moira Lab for safekeeping.
Source: https://www.cbr.com/immoral-x-men-mister-sinister-doomsday-weapon-marvel/