noncontemporary means not contemporary. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From non- + contemporary.
noun
- A person who is not the contemporary of another; one who lives in a different time period.“Thus, it might well be true that we are in no position to know what we owe to more remote future noncontemporaries in accordance with egalitarian conceptions of justice. We are in no position to determine their pertinent relative differences […]”